• Thinkbase
  A 'visual wiki'. It is based on Freebase, an open, shared database of the world's knowledge - in other words a 'Semantic Wiki'. Thinkbase uses a visualization tool (Thinkmap) to create an interactive visual representation of the contents and semantic relationships in Freebase.
  in Public bookmarks with communities databases freebase reference semantic_web tools visualization wiki by 3 users
• Topicle
  Search Community.
  in Public bookmarks with communities custom_search demo search search_engines tools by 2 users
• Transition Culture
  An Evolving Exploration into the Head, Heart and Hands of Energy Descent.
  in Public bookmarks with activism communities economics energy environment green home peakoil politics sustainability transition weblogs by 5 users
• Transition Towns WIKI
  Transition Initiatives and the Transition Network.
  in Public bookmarks with activism communities economics energy environment green peakoil politics sustainability transition wiki by 3 users
• Trends in the Living Networks
  in Public bookmarks with business communities media social_networking technology trends web2.0 weblogs
• Trouw Groen!
  Trouw. Virtuele ontmoetingsplaats voor natuurliefhebbers.
  in Public bookmarks with communities environment gardening green home nature news trouw walking
• Trouw Schrijf!
  Trouw. Ontmoetingsplaats voor iedereen die zich bezig houdt met schrijven, lezen en discussie hierover – op alle niveaus.
  in Public bookmarks with books communities howto literature reference stories trouw writing
• TrustedPlaces
  A word of mouth community where people can remember, share and discover great places.
  in Public bookmarks with communities places reviews social_networking tools by 7 users
• Tweakers.net
  Informatie- en communitysite voor 'tweakers'.
  in Public bookmarks with communities computer help news reviews software technology tips by 5 users
• Twitter
  in Public bookmarks with communities demo microblogging social_networking tools twitter by 85 users
• Upload Cinema
  A film club that takes the best web films to the big screen.
  in Public bookmarks with communities film video youtube
• Urban Dictionary
  Hilarious (and practical) 100% user-maintained dictionary where users provide and vote on definitions for urban words (slangs).
  Urban Dictionary is a slang dictionary with your definitions. Define your world
  in Public bookmarks with communities dictionaries language reference slangs urban weblogs by 118 users
• Urban Ecology
  Urban Ecology strives to create neighborhoods that are thriving, healthy places to live.
  in Public bookmarks with cities communities ecology environment neighborhoods
• Urban75
  Non-profit community site featuring huge photography sections, bulletin boards, live chat, drug information, football, direct action info and more!
  UK mag with photos of New York, London, Chicago, Brixton, Wales, drug information, useless games, rave stories, direct action, techno, politics, protest, football, internet, rave music, punch a politician and more!
  action boards brixton bulletin chat culture direct drug information london new photography photos politics protest urban75 york
  in Public bookmarks with activism cities communities culture london photography politics society uk urban by 3 users
• Urbantic
  Social bookmark manager. Urban bookmarking.
  in Public bookmarks with cities communities social_networking tools urban
• Urbis
  in Public bookmarks with art communities creativity poetry tools writing by 2 users
• Vimeo
  Quality video sharing.
  Vimeo is a respectful community of creative people who are passionate about sharing the videos they make. We provide the best tools and highest quality video in the universe.
  camera community funny movies share sharing vidblogs video videoblog videoblogging videos
  in Public bookmarks with communities social_networking tools video vimeo by 29 users
• WaarBenJij.Nu
  Reiscommunity.
  in Public bookmarks with communities holidays netherlands travel weblogs by 2 users
• Wakoopa
  
  Wakoopa tracks what kind of software or games you use, and lets you create your own software profile. Discover the best software and get to know who use 'em, for how long and why.
  discover mac network social software statistics track wakoopa windows
  in Public bookmarks with communities monitoring social_networking software tools by 13 users
• Watleesjij.nu
  Boekencommunity voor lezers.
  in Public bookmarks with books communities literature reviews social_bookmarking social_networking tools

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