J - M; Update

Italic = new.

Jabbin - PC2PC voip (Jabber client) - Communicate
Jabbits - Ask questions, watch answers - Knowledge
Jabphone - Messenger2phone - Communicate
Jaduka - Call-us-now features for all online media - Marketing
Jaiku - Social phone directory showing where you are (Nokia S60 2nd ed.) - Community
Jajah - Free phone calls, glocally - Communicate
Jalbum - Web-based album tools - Images
Jambase - Personalized news on live music - Audio
Jambo - Discover who's nearby & reconnect live - Community
Jamendo - Review, tag, rate & share music - Audio
Jamglue - Upload, edit, publish & share remixes - Multimedia
Jamjar - Flash collaboration suite for small groups - Collaborate
Jangl - Hide your cell phone number - Communicate
Jauntlet - Track & trace yourself - Geo
Javakicks - Digg Java news - Rate
Jaxtop - Personal start page - Startpage
Jellybarn - Upload, edit, manage, share your photos - Images
Jellyfish - Shopping search engine - Ecommerce
Jeteye - Clip & share (parts of) web pages - Bookmark
Jibberjobber - Manage & organize a job search - Employment
Jibjab - Create & share your funniest stuff - Community
Jigsaw - Subscribe, buy, sell sales contacts - Marketing
Jimdo* - Create your website for free - Publish
Jimmystv - Post, watch & share videos - Video
Jira - Issue tracking - Organize
Jive - Enterprise forum solution - Software
Jiwire - Locate & map Wi-fi hotspots - Wi-fi
Jobaria - Shoot job interview & link to it in your resume - Employment
Jobazaar - Tagged job offerings - Employment
Jobberwiki - Share job knowledge & experience - Employment
Job-brokers~ - Submit your resume & get job offers - Employment
Jobcoin - Get a mini job board on your website & make money on it - Employment
Jobmeeters - Job board community (French) - Employment
Jobneters - Job vacancies & map mash-up (UK) - Employment
Jobomatic - Add paid job listings to your site - Employment
Jobsearch2.0 - List of job boards 2.0 - About
Jobthread - Start a job board or add paid listings to your site - Employment
Jobtonic - Find a job or refer to one & get a reward - Employment
Joesgoals - Manage & share your tasks - Office
Joga - Nike + Google community - Marketing
Join2growbiz~ - Community for European entrepreneurs (by Fortis Bank) - Community
Jookster - Search, rank & share - Search
Joopz - Web2Text & Text2Web - Communicate
Jotcloud - Leave notes on websites - Office
Jotform - Make your Ajax webforms - Office
Jotlet - Share your schedule online - Office
Jots - Information sharing - Knowledge
Jotspot - Take one set of notes, live - Office
Jott - Voice & text 2 email & mobile - Communicate
Joyent - ASP hosting of email, calendars, contacts… - Store
Jpegr - Publish & share photos - Images
JPG - Submit, phlog & vote on photos - Publish
JS-Kit - Add comment features to your website - Software
Judysbook - Review & rate your neighbourhood - Ecommerce
Juicecaster - Upload & cast cell photos & videos - Publish
Jumpclaimer - Inform your relatives about your whereabouts thru sms - Communicate
Jumpcut - Create, explore, remix & share movies - Video
Jumptap - Mobile search solutions - Software
Jungledisk - Store your data - Store
Junkdepot - Buy & sell everything for/from your home - Ecommerce
Junklog - Rate, review & share media - Multimedia
Justanger - Express & share your anger - Publish
Justcurious - Q&A at random - Fun
Juststepsaway - Deep filtered vertical search for vacation rentals - Search
Juvino - Reroute your mobile calls and texting - Communicate
Jux2 - Meta search - Search
Juxel - Tag interfaced porn - Porn
Jyve - Get live answers on your questions - Community

Kaboodle - Information sharing - Knowledge
Kakorama - Compose & upload your ringtone for free, find out what happened on the day you were born, plus IM service - VAS
Kancept - Submit design concepts and have them reviewed & rated by other users - Design
Kancept - Submit design concepts and have them reviewed & rated by other users - Design
Kaneva - Digital entertainment marketplace (3D) - Multimedia
Kanoodle - Sponsored links services - Marketing
Kanosis - Upload your files & use extra apps (MLM) - Store
Kapaza~ - Free classified ads marketplace - Ecommerce
Karmadu - Thank people by sending them karma points - Community
Karmus - Create, share & contribute to cards - Community
Kartoo** - Clustered, mapped search - Search
Kayak - Price comparison with user input for travel - Ecommerce
Kayakbuzz - Find cheap destinations; Google Maps mash-up - Ecommerce
Kaywa - Publish & share multimedia on web & cell, using sema code - Multimedia
Kdice - Multiplayer strategy game using Google's web toolkit - Game
Keepmytime - Web-based timekeeping - Organize
Keepvid - Search & download videos - Video
Keepyousafe - Digital safe deposit box - VAS
Keotag - Keyword and tag search - Search
Kepty - Publish about web, get rated & get paid for it - Publish
Kerpass - Personal security software for web & mobile - Identity
Kevo - Collaborate on VIP's biographies & gossip - Collaborate
Kewego~ - Publish, rate & share videos - Video
Keyworddensitychecker - Visualizes keywords (metatags) in clouds - Tag
Kickapps - Adds 2.0-things and video to your website - Software
Kickrss - Blend several feeds into 1 - RSS
Kidlinkz - Bookmark for your kids - Bookmark
Kiko - Online calendar - Office
Killerstartups - Digg start-ups - About
Kinja - Search blogs - Search
Kishkish - Detect lies thru phone - Communicate
Kisstokiss - Dating - Date
Kitbit* - Publish & share your opinions - Collaborate
Kittenauth - Protection against spambots - Software
Kiva* - Give a micro credit to an entrepreneur from a developing country - Economy
Klabol - Web 2.0 list - About
Klipfolio - Personal portal - Startpage
Klostu - Aggregate all your communities in this one - Community
Klostu* - Connect yourself to all message boards, communities & people - Identity
Kluskring~ - Share ideas & knowledge on DIY - Community
Kmfavorites - Social bookmarking - Bookmark
Knacktion - Share & sell your talent & content - Economy
Knover - Discover who's connected to what & whom - Search
Knowbrainers - Q&A - Knowledge
Knowmore - Consumers unite - Economy
Knownow - Connecting data, apps & people - News
Kolektors - Create, manage, access & share your collections - List
Kompoz - Compose & share music together - Collaborate
Kongregate - Gamers community - Game
Konnects - Networking for professionals - Community
Koolanoo - Jewish social network - Community
Koolim - Meta messenger - Communicate
Koolweb2.0 - Find & rank 2.0 websites - About
Kopete - Universal messenger - Communicate
Koral - Content & document management system - Software
Koreacrunch - Reviews Korean 2.0 companies - About
Kosmix - Vertical search - Search
Kowari - Store, retrieve or analyse metadata - Data
Kramkoob - Submit your online properties for 1 second fame - Marketing
Kramkoob - Submit & share your site, blog, auction, news, vidcast or podcast - Marketing
Kratia - Search, vote & rank results - Search
Krawlerx - Create, search, share & build community around your media - Community
Kraytiv - Bookmark pages relating to creativity - Bookmark
Krugle - Search open source software - Software
Ksolo - Record & share karaoke songs - Audio
Kuler - Publish, rate & share colour schemes - Design
Külist - Search, compare, bookmark best prices - Ecommerce
Kuscash* - Mobile digital wallet - VAS
Kwidge - Create funny edit of your photo & share it (PRS) - Images
Kwizzical - Play quiz & share or donate money - Game

Lala - Swam CDs, from July 4th - Ecommerce
Landcraft* - Render your own 3D landscape & share it - Images
Lastfm* - Profile your taste, share, personalize your radio - Audio
Laszlo - Web 2.0 software - Software
Latengo* - Upload or publish & share all your digital things (German) - Multimedia
Launchcast - Create your own web radio stations - Audio
Lazybase - Create, manage & share databases - Data
Leafletter - Create mini website & distribute it as a microformat - Publish
Learning20 - Online speed course on 2.0 - About
Leftoverlunch - Share your leftovers - Fun
Legalforce - Buy, sell & license patents - VAS
Lemonzoo - Upload, rate & share funny media - Multimedia
Lendmonkey - Trade everything - Economy
Lessaccounting - Simple SME bookkeeping & sales management solution - Software
Letspowwow - Meet & work together on documents - Organize
Letterpop - Create & send out newsletters - Publish
Leve1 - Share news - News
Lexxe - Meaningful search - Search
Librarious - Catalogue your collection - List
Librarything - Catalogue & share your library - List
Licketyship - Home-delivery supermarket; retail & couriers co-operation - Ecommerce
Licketytrip - Last minute vacation rentals (map mash-up) - Ecommerce
Lifeio - All to the people (stealth) - Software
Lifelogger - Share audio, video & photos - Multimedia
Lifesterblog - Publish & share & connect with friends - Publish
Lifetango - Publish your goals & ask others to support you - Collaborate
Lifetrackers - Write your own book, compile an album, alone or with friends & print it - Publish
Lifetype - Blogging software - Publish
Lightenment - Publish & share reviews of gadgets - Ecommerce
Lightstalkers - Networking & discussion tools for professional travellers - Community
Lijit* - Social contextual search - Search
Like - Find article you want and do a likeness search - Search
Lilisto - Social bookmarking - Bookmark
Limbo41414 - Dutch auction - Ecommerce
Lime - Help & inspire each other - Collaborate
Linatree - Download, print & assemble your photo camera - Personal manufacturing
Lingr - Chat community - Communicate
Linkatopia - Social bookmarking - Bookmark
Linkedfeed - Folksonomied news - News
Linkedin - Manage and share your cv - Community
Linkedwords - Search with context - Search
Linkfilter - Digg news - Rate
Linkgrab - Submit & share links on design - Design
Linklike - Link exchange - Marketing
Linklog~ - Social bookmarking - Bookmark
Linkmybox - List & share all your online presences here - Identity
Linknsurf - Track & share blogs on your mobile - Publish
Linkput - Results with sure input - Search
Linkroll - Social bookmarking - Bookmark
Linkrss - Create, store & syndicate your own rss feeds - RSS
Lisensa - Manage your digital rights through licensing - VAS
Listal - List & share all your media - Multimedia
Listd - Accelerate your Ebay listings - Ecommerce
Listerlister - Create, share & vote for lists - List
Listfoo - Create & share lists - List
Listible - Folksonomied software & code search - Bookmark
Listigator* - Create, edit & share lists - List
Listmixer - Social bookmarking (temporary links) - Bookmark
Listofbests - List & share products, places, people, goals, etc - List
Listofweb20 - List of lists with Web 2.0 websites - About
Listography - Publish, share or read lists - List
Listpool - Create, manage & share to-do lists - Organize
Listr20 - Lists "all" Flickr-like spelled domain names - Fun
Listsomething - Share any list to buy & sell things, services - Economy
Litepost - Webmail - Communicate
Literature-map - User-built literature database - List
Litespellchecker - Check spelling as you type - Office
Littlewiki - Create wiki pages - Publish
Live - Personal portal - Startpage
Livedigital - Store, share, produce, distribute your content - Multimedia
Livedoorsearchbox - Search in IE window border - Search
Livejournal - Join or create your own community - Community
Liveleak - Upload & share sensational videos - Video
Livelocker - Digg multimedia - Rate
Livemansion - Create & produce a feature film together - Collaborate
Livemarks - Live update of Delicious - Bookmark
Livepagerank - Track your site visitors geographically - Data
Liveplasma* - Search & find other things to your taste - Search
Livesearch* - Refine your search while you type - Search
Llor - Build your street - Game
Lo8os - Graphic design gallery & community - Images
Locallive - Windows maps - Geo
Localpoint~ - Google mash-up with several (Dutch) dbases - Geo
Locr - Organize photos using geo information - Images
Logahead - Blog solution - Publish
Logopond - Submit, rate & discuss graphical design - Images
Loki* - Search & navigate web & real life - Search
Longbets - Prediction competition for charities - Gamble
Longtimelost* - Find back lost friends thru Google - Search
Looklater - Private bookmarking - Bookmark
Lookmarks - Social bookmarking - Bookmark
Lookthisup - Social bookmarking - Bookmark
Lookupahookup - Create or join an expert or experience group - Knowledge
Loomia - Folksonomied media search - Multimedia
Loopnote - Notification webware - Office
Loowa - Claim your email address, share your profile - Community
Lopico - Social business directory - Ecommerce
Lordoftv - Watch over 1,000 channels - Video
Lostcherry - Social network for youngsters - Community
Lostkeys - Lost & found for keys - Economy
Loudblog - CMS inc - Publish
Loudervoice - Explore, blog about & rate reviews - Publish
Lovento - Find friends & events - Community
Lowlandsguide~** - Explore the lay of the Lowland Festival with this mobile app - Geo
Lphanr - Multi compatible P2P file sharing - Multimedia
Lulu - Publish & sell your content - Multimedia
Lumrix - Semantic search engine - Search
Lunchprodigy - Process your lunch orders online - Office
Luvup - American version of Zuzu - Office
Lyceum - Enterprise multi-user blogging - Software
Lycosiq - Social bookmarking + Q&A - Bookmark
Lyrics~ - Share lyrics & music information - Collaborate
Lyro - Publish, manage & share contact data - Identity

Mabber - Mobile messenger - Communicate
Mackicks - Digg Mac news - Rate
Madville - Submit & share mad stuff - Community
Magg - Aggregates movies from many websites - Video
Magnolia - Social bookmarking & voting - Bookmark
Magnoto - Phlog & blog - Multimedia
Mail2RSS - Inmail2RSS - Communicate
Mailbigfile - Mail large files - Store
Mailchimp - Design & code your newsletter, and have it distributed - Marketing
Mailemotion - Create & send videomail - Communicate
Mailfriends - Penpals site - Communicate
Mailinator - Disposable email + spam mash-up - Geo
Mailmydisc~ - Exchange your media - Economy
Mailvault - Store, process & encrypt your email - Communicate
Mainada - Create & share comics - Publish
Majestic12* - Distributed search engine - Search
Majikwidget - Customize & integrate widgets on your blog - Software
Makemewatchtv - Repackage video news - Video
Makidi - Search for people (?) - Search
Mamjam - Location based instant messaging - Communicate
Mamma - Meta search - Search
Mangeloo - Run IM on all devices & everywhere - Communicate
Mangezmangez - Publish, review & share restaurant information - Community
Mansion - Betting exchange - Gamble
Manyworlds - Explore business info reviewed & ranked by experts - Knowledge
Map24 - Route finder; 3D - Geo
Mapable - Build & share chatrooms & communities - Community
Mapbuilder - Mash-up your own maps - Geo
Mapchatter - Chat on maps - Communicate
Mapeire - User generated lowest price finder; Google Maps mash-up - Ecommerce
Mapkit - Create & share your own map - Geo
Maple - Social bookmarking - Bookmark
Maplib - Turn every photo or illustration into an interactive map - Geo
Mapmix - Find your friends (map mash-up) - Community
Mapmyrun - Plot & share your run route - Geo
Mappedup~* - Map your feed sources geographically - RSS
Mappr - Map Flickr photos per tag - Geo
Mapsack - Map, discover & share places - Geo
Mapshark - Search maps in many websites - Geo
Maps-quiz - Where is that-quiz (addictive!) - Game
Mapstars~ - Refers to map mash-up tools & experiments (many Dutch) - About
Mapstats - Check your PR - Data
Mapsurface - Map blog traffic - Data
Mapwii - Map your WII number & challenge other players - Geo
Mapwing - Create, explore & share virtual tours - Images
Marco - How not to launch a Web 2.0 site - About
Markaboo - Bookmark & share anything - Bookmark
Marketpicks - Digg for stock information - News
Marktd - Digg marketing stories - Marketing
Markthisdate~ - Publish & share events - Knowledge
Mashable - 2.0 blog - About
Mashcodes - Get social networking tools (hosted by Mashable) - Software
Mashmap - Find movies & showtimes (map mash-up) - Ecommerce
Mashplanet - Find & submit mash-ups per category - Geo
Mashupfeed - RSS alerts for mash-ups - About
Matador - Global travel community - Community
Matchactivity - Connect to likeminded people - Date
Matchbook - Betting exchange - Gamble
Matchmypet - Find a date for your pet - Search
Matriceservices - Web 2.0 annotated logo cloud - About
Maxigate - Social bookmarking desktop - Bookmark
Maxthon - Tabbed browser, IE-compatible - Browse
Mayasmom - Something with parenting - Community
Mayomi - Mind map & share - Collaborate
Maywehelp - Surf any web page & Chat with other site visitors - Communicate
Mb3dengine - Animated Digg-cloud - Search
Mblox - Mobile wallet community - VAS
Measuremap - Web stats - Data
Mecanbe - Share your goals and inspirations - Collaborate
Medgle* - Medical search - Search
Mediafire - Limitless up&downloads - Store
Mediamashup - Create, mix & share media - Multimedia
Mediamatrix - Isolate, segment & annotate media - Multimedia
MediaMax* - Store, manage & share media - Multimedia
Mediasilo - Digital asset management - Video
Mediatuner - Manage text & rich media feeds - Multimedia
Medio - Mobile search & recommendation engine - Software
Meebo - Integrates several messengers - Communicate
Meet-a-local - Find local hosts in other cities (German) - Community
Meetmoi - Mobile dating - Date
Meetro - Find friends nearby (thru messenger) - Community
Meetup - Find common interests & organize meetings - Community
Meetwithapproval - Organize & manage meetings - Office
Meevee - Search, upload, share, review & vote tv content - Search
Meez - Create & share your 3D avatar - Identity
Mefeedia - Find & subscribe to vlog video streams - Video
Megabuzz - Participate in buzz game & win prizes - Game
Megite - Discover & help select news - News
Melodeo - Listen to, share, discuss & create podcast playlists, on your cell - Audio
Memeorandum - Folksonomied news summaries - News
Meme-stream - Digg funny things - Rate
Memetrics* - Optimize your marketing across media - Marketing
Memigo - Digg news - Rate
Memory - Memory + Yahoo images mash-up - Game
Memotoo - Office online (French) - Office
Memstream - Bookmark, rank & share interesting news - News
Mendix*~ - Semantic application development - Software
Mercora - Search music & get recommendations - Audio
Merit - Treemap for Marine Corps Equipment Readiness Information Tool - Data
Messagr - Find & communicate with people with matching interests or knowledge - Communicate
Meta - 2.0 forum solution - Software
Metacafe - Upload & share video - Video
Metadot - Build your own website, intranet, portal - Software
Metafilter - Digg web projects - Rate
Metaglossary - Meta web search for word definitions - Office
Metathings - Aggregate & share all your online personal profiles - Identity
Metaweather - Put aggregated weather feeds on your site - RSS
Metawishlist - List & share your wishes - List
Mfoundry - Develop & deploy mobile apps, rapido - Software
Miaplaza - Connect with friends, family etc. - Community
Midomi - Search music by making music - Audio
Mig33 - Chat, text & call your friends - Communicate
Mightyv - Web-based tv search & epg (UK) - Video
Mikons - Create & share your own icons - Community
Mileguru - Aggregate all your loyalty points on 1 page - Finance
Millennialmedia - Mobile marketing solutions - Marketing
Milliondollarhomepage* - Buy pixels to finance study - Economy
Millionsofgames - Review & share games - Game
Mindpicnic - Choose a course, learn online - E-learning
Mindpicnic* - Share & learn from online knowledge - E-learning
Minglenow - Connect with places & people - Community
Miniboxs - Start page ("RSS magazine") - Startpage
Minitellus - Share your experience with & meet students - Community
Minowireless - VoiP on your mobile - Communicate
Mint - Blog stats - Data
Minti - Parents community - Community
Mirpod - Tuner, radio & tv to play RSS feeds or xspf - Multimedia
Mister-wong - Social bookmarking (German) - Bookmark
Mitup - Set up, manage & invite to meetings - Office
Mix - Explore, upload, download & share playlists & public mixes - Audio
Mixd - Text & send pics & vids to groups of friends - Communicate
Mixercast - Mix your own media with professional footage & publish it - Video
Mixpo - Present yourself in multimedia - Publish
Mixtaping - Upload & share songs, compilations & mixes - Audio
Mmmzr - Buy space on this page now, or your price doubles - Marketing
Mmoguildsites - Manage your MMORPG clan's hosting & community needs - Software
Mmotr - Automotive (dating) community - Community
Mnemo - Refine your search terms - Search
Mobango - Discover & share mobile media; ; marketplace for syndicated content - Multimedia
Mobbah~ - Email or wap your photo + location - Communicate
Mobber - Create instant community & chat while you surf - Community
Mobile20 - Wiki about mobile 2.0 initiatives - About
Mobilealibi* - Online safe deposit box - VAS
Mobilecomplete - Test your mobile apps on all devices - Software
Mobiledistillery - Port mobile Java apps to 550 phones, rapido - Software
Mobileglu - Web services to your mobile - Startpage
Mobileinternetmanifesto - Vision on Mobile 2.0 - About
Mobilereporters~ - Upload & share your video - Video
Mobilicious - Mobile social bookmarking - Bookmark
Mobiluck - IM, text & share media on your mobile - Community
Mobio - Lean mobile lifestyle apps & content - Software
Mobispine - Mobile feed browser - RSS
Mobitv - Get tv & radio on your cell & laptop - Video
Moblee - Opt in to offers direct to your mobile - Ecommerce
Mobloco - Get daily text alerts on things happening near to you - News
Moblr - View or upload & share mobile content - Multimedia
Mobo - Order food on the go, get discounts & avoid waiting lines - Ecommerce
Mobsaver - Price comparison thru your cell - Ecommerce
Mobspray* - Create & share graffiti in places thru mobile2RFID - Game
Mobunga - Share & discover videos from multi devices - Video
Mochikit - Suite of JS libraries - Software
Mochilla - Buy & sell your media content - Multimedia
Mochimention - Leave & share comments & ratings anywhere online - Rate
Mockingbird - Collaborative design (Stealth) - Design
Modoshi - Shopping community - Ecommerce
Mofile - Upload & share your files - Store
Mog - Share your playlists (automated) - Audio
Mogopop - Publish & share iPod content - Multimedia
Mojiti - Share your annotated videos - Video
Mojizu - Create & share characters - Community
Mojoflix - Upload & share vids - Video
Mojopac - Run any app on any device - Software
Mojungle - Live phlogging & vlogging - Publish
Moka - Subscribe to book wisdom delivered thru sms - VAS
Mologogo - Share where you are - Community
Momb - 2.0 list - About
Mommybuzz - Moms connect with moms - Community
Moneytrackin' - Manage your budget & expenses & share it - Finance
Moneytwins - Exchange currencies without banks - Finance
Monitor110** - One-stop semantic financial research suite - Search
Monitorus - Personalized portal - Startpage
Monkeybites - 2.0 blog - About
Monkeyon - Remind someone else on to-dos - Organize
Montage-a-google - Tag based random photo montage; Google mash-up - Game
Montastic - Monitor your website - Software
Monthlydollar - The world's 1st internet employee - Fun
Moo - Use Flickr photos into printed business cards - Images
Moob - Party scene community - Community
Moodle - Course management system for learning communities - E-learning
Moodviews~ - Site analytics software - Data
Mooflex - CMS for forums - Publish
Moola - Win millions with sponsored game (stealth) - Marketing
Mooter - Clustered search - Search
Moqvo - Upload & share your media - Multimedia
Morguefile - Public image archive - Images
Mosaicglobe - Upload & share photos, artwork, ideas - Multimedia
Mosthired - Aggregates job vacancies from other 2.0 job boards - Employment
Mosuki - Hear about events from people you know - Office
Mothersclick - Share knowledge on motherhood - Community
Mothrfuckr - Submit & vote for the worst of Web 2.0 - Fun
Motionbox - Share videos - Video
Motionmall - Design & insert webads - Ecommerce
Motleyfoolcaps - Pool your knowledge on stock buying - Finance
Motormapusa - Locate or find vehicle for sale on Ebay - Ecommerce
Motorpulse - Digg cars - Rate
Mousebrains - Thought starter for advertising creatives - Knowledge
Movenetworks - Measure & analyse each video viewer experience - Software
Movers20Top100s of daily/weekly/monthly Web 2.0 movers (based on Alexa) - About
Movielens - List, review & discuss films - Video
Moviemasher - Add video editing to your website - Video
Movietally - Catalogue, recommend & share movie info - Video
Movingweb* - Blog about everything that moves (on) the web - About
Movoxx - Get localized & personalized alerts & coupons on your cell phone - Marketing
Mozeo - Text cast to & chat with your own group on your cell - Communicate
Mozes - Share information & people thru your mobile - Community
Mozesmob - Mobile Q&A - Knowledge
Mozilla - Browser add-ons & mash-ups - Software
Mozillakicks - Digg Mozilla news - Rate
Mozy - Upload & backup your files - Store
MP3tunes - Upload & listen to your music - Audio
Mpire - Track price trends when you shop - Ecommerce
Mrdealio - Compare & track prices - Ecommerce
Msgme - Communicate or advertise thru sms keyword service - Marketing
MSIG - Generate a 2.0-ish logo online - Images
Msinfocard - Microsoft's identity metasystem - Identity
M-spatial - Mobile local search solutions - Software
Mturk* - Complete simple tasks & get paid - Economy
Mugshot - Upload & share photos, artwork, ideas - Identity
Muiso - Track your taste, get recommendations - Audio
Multiply - Store, share & discuss multimedia - Multimedia
Multipost - Make your own multipost bookmarklet tool - Bookmark
Multitap - Share, rate, discuss & categorize screenshots - Game
Multi-touch* - Handy interface - Design
Multiverse - Network of MMOGs and 3D virtual worlds - Game
Musestorm*** - Metasearch in Flash (several interfaces) - Search
Musicarsenal - Music business management tools - Software
Musichawk - Share the artists you're into - Community
Musiclocated - Geolocate your music - Audio
Musicmap - Search & find other things to your taste - Search
Musicmobs - Share your tastes & find music - Audio
Musicovery - Web radio from Liveplasma - Audio
Musicplustv - Enjoy clips, put in requests, chat with dj's - Video
Musicstrands - Tag, share & post music community - Audio
Musipedia - Search, edit, expand & share collection of tunes - Audio
Mustseeblog - Comparison of Video 2.0 pages - About
Mvelopes - Manage your finances - Finance
My50 - List & share your to do things - List
Mybet - Betting exchange - Gamble
Mybigfishgames - Review & share casual games & get rewarded - Game
Mybigriver - Find while you type; Amazon mash-up - Search
Mybloglog - Stats for LiveJournal moods - Data
Mybookmarkmanager - Social bookmarking - Bookmark
Mybookmarks - Social bookmarking - Bookmark
Mybookyourbook - Register, list & swop books - List
My-brand - Manage online advertising online - Marketing
Mycoogee - Access, store & share your cell's contents (client) - Multimedia
Mycool - Search, create & share special interest groups - Community
Mycybertwin* - Clone yourself into a chat robot - Communicate
Mydeathspace - Directory of dead Myspace members - Community
Mydecide - Take decisions together - Collaborate
Myemail - Check email anywhere - Communicate
Myfabrik - Store, manage & share your media - Store
Myfeedz - Customize your news & get recommendations - News
Myfilmz - List, review & discuss films - Video
Myfoodphone - Schedule a call to get you out of a situation - VAS
Myfreecopyright - Upload, digital fingerprint & publish - VAS
Myfreeimplants - Get a boob job or help her get one - Community
Mygads - Compile info, access, update & share it thru phone, im, web, etc - Multimedia
Mygamma - Mobile community - Community
Myheritage - Upload & share photos & recognize faces - Images
Myhomepoint - Family calendar - Office
Myhommy - Personal portal (Israeli) - Startpage
Myhq - Social bookmarking - Bookmark
Mylid - Multi-protocol identity provider - Identity
Mylinkvault - Social bookmarking - Bookmark
Mylongtail - Optimize search engine findability - Marketing
Myme - Create your online avatar - Identity
Mymediaroom - Publish & manage PR documents & info - Publish
Mymemorizer - Share calendar & get alerts - Office
Mymetar - Link to & share favourite metars, tafs & radar images - Images
Mymovienetwork - Community for filmmakers - Community
Mymuv - Track lifestyle changes & trends - Collaborate
Mynewplace - Find & rent your new home - Ecommerce
Mynoteit - Store & access school information - Store
Mynumo - Create, share or sell mobile content - Multimedia
Myopenid - Skip tedious profile form-filling - Identity
Mypaymentnetwork - Selfservice online payment service - VAS
Mypicklist - Share & recommend things you love - List
Mypictr* - Create & publish your profile pic for social softwares - Images
Mypip - Social bookmarking - Bookmark
Myprogs - List & find software - List
Mysay - Communicate with friends through voice2web messages - Communicate
Myshape* - Find clothing matched to your body shape & preferences - Ecommerce
Myspace - Communicate with & share content with your friends - Community
Mystickies* - Browse, search, sort & edit notes online - Office
Mystrands - Share your taste, get recommendations & party - Community
Mystyledesigns - Your body, your shape, your clothes - mass customized - Ecommerce
Mysupermarket - Compare products & prices of groceries - Ecommerce
Mytago - Semacodes to connect offline & online worlds - Tag
Mytheme - Animate images online - Images
Mythings - Show your things, get them valuated & protect them - Ecommerce
Myticklerfile - Manage your and others' tasks - Office
Mytimelines - RSS2Timeline - Organize
Mytoons - Upload & share cartoon animations - Video
Mytriggers - Price comparison alert services - Ecommerce
Mytube - Upload & share photos, video, music - Multimedia
My-tuts - Social tutorial bookmarking (and soon: publishing) - Bookmark
Mytv - Upload, rate & share videos (German) - Video
Myvideokaraoke - Sing & share your song on video - Multimedia
Myvtc* - Share media & documents for generations to come - Community
My-wage - Share & benchmark your salary - Employment
Mywaves - Send web videos to your phone - Video
Mywebdesktop - Personal & collaborative desktop functions - Office

Update 070527.