- Flickr@
- Find a collection of sites relating to Flickr, an online photo management tool where users can share photos, store, search, and sort photos.
- Yahoo! Groups
 - Yahoo! Groups allows you to create and manage online email communities in areas such as Recreation and Sport, Entertainment and Arts, Hobbies and Crafts, Computers and Internet, and Health and Wellness. - MySpace (36)
- Explore the sites of MySpace, the virtual community, including the home page, its music portal, editor and toolbar wizard, the technorati's portal blog, and articles about the virtual community.
- Google Groups
- Google Groups allows users to start their own email discussion groups and message boards, and browse archives of Usenet groups.
- Friendster (5)
- Social network sharing profiles, thoughts, photos, and opinions.
- orkut
- Online community that connects people through a network of trusted friends.
- MSN Groups
- Message boards and communities of people as unique as you.
- Meet Up
- Connects people around topics of interest locally.
- Well, The
- Pioneering online community known for engaging conversation and intelligent debate. Features more than 260 conferences ranging from technical and specific to abstract and surreal.
- MSN Member Directory
- Allows MSN users to share profiles with their interests and pictures.
- Facebook
- An online directory that connects people through social networks at colleges and universities, secondary schools, or workplace. People with a valid email address from a supported college, high school, or company can register for Facebook and create a profile to share information, photos, and interests with their friends.
- Yahoo! 360
- Bringing together popular Yahoo! communications, content, and community features, including blogs and other sharing tools for recommending favourite movies, restaurants, music, and more.
- Everything2
- User-created encyclopedia, web directory, and knowledge web. Everything2 offers definitions, articles, and writeups by readers about anything and everything.
- Suicide Girls
- Cult of sexy amateur punk, emo, and goth girls with online journals, pictures, and movies.
- Tribe.net
- Online social networking service that connects the people in your personal networks and community.
- Tickle
- Offers tests, matchmaking, and social networking. Tickle services include LoveHappens, an online introduction network with profiles that feature stories written by friends and family.
- hi5
- Place to meet new people, connect with friends, and share ideas.
- Bolt
- News and features, email, chat, message boards, and more.
- Dogster
- Post and share your dog's photos and facts. Site enables viewing by breed, size, name, hometown, and more.
- Cybertown
- The sci-fi community of the future.
- LinkedIn
- Online service helping professionals find and connect with one another through shared social contacts.
- Friend of a Friend Project (FOAF)
- Creating a web of machine-readable home pages describing people, the links between them, and the things they create and do.
- Many 2 Many
- A group blog on social networking software.
- Ning
- Free online service for building and using social applications.
- CouchSurfing
- Helps users make connections worldwide. Meet people from other countries and offer your couch to your new friends when they visit.
- SmartGroups.com
- Helps to organise the different groups of people in your life using email and the Internet.
- Yahoo! Member Directory
- Directory for finding profiles of Yahoo! members with similar interests and getting in touch with them.
- FaceParty
- Build a personal web site, upload pictures, send messages, chat, and find people.
- RateMyBody
- Online community. Meet people, chat, and rate pictures of others.
- Catster
- Post and share your cat's photos and facts. Site enables viewing by breed, size, name, hometown, and more.
- Wallop
- Research project of the Social Computing Group at Microsoft Research where users can share photos, blog, and interact with friends.
- Meatball Wiki
- Community that deals with online culture, especially how people online come together naturally in groups.
- Communities.com
- Online community with chat rooms, instant messaging, detailed photo profiles and galleries, photo ratings, and more.
- Bebo
- Social network for people who want to stay in touch with their old friends and college pals. Search for current or past students of your college or school, or join clubs, exchange photos, and read blog entries from other users.
- Stickam.com
- Broadcast yourself live. Add live feed, video chat, movies, photos, and audio to your web page, MySpace page, or blog.
- CommunityZero
- Allows a group of people to communicate and exchange information over the Internet in their own private and secure area.
- Makeoutclub
- Online independent music and subculture community.
- Cyber Yugoslavia
- Provides a home on the Internet for those citizens of former Yugoslavia. Citizenship is open to anyone.
- TagWorld
- Combines photos, blogging, tagging, and storage in a free online service.
- Picit.com
- Dedicated to greeting cards, funny pictures, online dating services, pic ratings, and other free stuff.
- Multiply
- Web community that allows friends and friends of friends to stay in touch by sharing photos, stories, group messages, and more.
- Huminity
- Social networking and chat software.
- Mediachest
- Share books, CDs, DVDs, and video games with people in your social network.
- bianca
- Alternative online community. Home of bianca's Smut Shack.
- iSawYou.com
- Home of Flirt Tag, the online/offline game for meeting people. Allows users to send short notes to virtual message centres that mirror actual locations.
- Life With Alacrity
- A blog on social software, collaboration, trust, security, and privacy, by Christopher Allen
- Playdo Community
- Create a unique character by choosing its appearance, age, gender, origin, and interests, then enroll it as a citizen in Playdo City where it can interact with other users.
- Pinoy Exchange
- Features message boards on variety of topics for Filipinos.
- Yafro Moblog
- Create a free online picture journal using your camera phone or digital camera, and share them with friends or make new friends too.
- Interracial Village
- Online community for people all over the world from different cultures. Includes lifestyle, cottage shop, message board, and more.
- ICERED
- Online community of high-income professionals in Hong Kong, Singapore, and elsewhere in Asia engaging in discussions of school, work, and play.
- Backfence.com
- Collaborative "hyperlocal" community hoping to see thousands of web sites bloom, created by neighbours, for neighbours, and supported by local advertising.
- Desi Rater
- A photo rating site to rate Indian girls and guys online. Upload your picture and get it rated by others. Includes chats and forums.
- Tagged
- Online community where users can share photos, keep journals, discover friends, and more.
- Zanpo
- Create a constantly evolving virtual city online.
- Wikicities
- Offers users free wiki hosting to build a community-created web site.
- Academici
- Global networking platform linking academics, associations, societies, services, students, and related businesses.
- i-neighbors
- Meet and communicate with your neighbours.
- TheDilly
- Community featuring college, music, sport, and gaming forums, chat, journals, ratings, messaging, and more.
- Groups@AOL
- Features message boards for communities based on common interests.
- CPixel.com
- Online community and picture rating site. Hate or rate!
- MapPlanet.com
- Experimental community geographically organised on a high-resolution map of planet earth.
- Minti
- Provides an online community for parents to both share and rank advice about parenthood. You can create your own family page, keep a blog, and make friends with other members.
- AOL People Connection
- Community for AOL users to interact in blogs, message boards, photo galleries, and more.
- Amity Zone
- Social networking web site that helps people connect featuring personals, events, classifieds, forums, blogs, and more.
- Findapix
- Show pictures of yourself and send and receive messages with other members.
- BuddyPic.com
- Rate and meet guys and girls.
- Ryze
- Business networking community for people in in the high-tech, finance, and digital media industries.
- Square, The
- Online community for Ivy League students and graduates offering a range of services including job opportunities, local events, personals, chat, home pages, and networking.
- FriendsAbroad
- Online community where users can meet and communicate with people from all over the world and learn new language skills.
 Yahoo! India Groups
- Yahoo! India Groups allow users to manage discussion groups, share photos, and stay in touch with friends and family.- domeus
- Allows people to share passions, interests, and opinions by creating and subscribing to free email groups, discussion forums, and mailing lists. Previously eCircle.
- AOL: People and Chat Directory
- Find AOL users that share common interests for chat.
- DowneLink
- Online forum for the GLBT community. Allows users to share pictures, comments, and testimonials. Also has a space for blogs and an online store.
- Laws of the Virtual Worlds, The
- Paper discussing how the legal concepts of property and moral rights might apply in virtual worlds and online communities.
- Full Moon Webs
- Member driven online community that offers web hosting, blogs, newsfeeds, and email.
- Webstock Whole Earth Festival
- 3D entertainment, information and technology showcase.
- eyebees
- The base camp of swarming offers downloadable software for a collective surfing experience. Browse the Internet with your friends and communicate while you surf.
- World Lounge
- Offers users the opportunity to meet people of the same ethnic background through photos, chats, and other events.
- Building an Online Community: Just Add Water
- Advice from Matt Haughey in Digital Web.
- Varsity World
- Community that allows teens to network, make friends, create blogs, watch teen-created videos, and more.
- Global Pau Hana
- Worldwide grassroots community to connect people with an affinity to Hawaii.
- Yahoo! India Member Directory
- Finds people with similar interests.
- Person.com
- Virtual community allows users to rate profiles with photos, chat one-on-one, play online games, discuss relationships, and more.
- Petster
- Interactive community that connects pet owners and enthusiasts through a global network of animal lovers, pet friends, and breed and species organisations.
- YFly
- Teen-only social networking site that empowers teens to connect to their friends, meet new friends, and express themselves through a variety of personalised features. Yfly also enables teens to take their online experience to their cell phone through group text messaging capabilities.
- Popist.com
- Virtual community for teens to enjoy themselves and explore their friends' interests and hobbies.
- Marble2 Global Hotspot
- Build, connect, post video, and blog your global life. Marble2 is an active social network where members blog, email, send instant messenges, and wiki articles together.
- Got Kids Network
- Parents' social network where club members share parenting advice, local event information, shopping deals, and other resources to help raise children.
- EdGateway Communities
- Offer science, math and environmental educators and their organisations the ability to find, organise, and share events, discussions, information, and documents.
- Outcasted
- An online community with forums, chatrooms, free email accounts, and more. Also includes links to related web sites.
- Nowwwhere
- Virtual world featuring 3D ray-traced graphics. Wander around, meet other netizens, and try to solve some puzzles. Features animation and sound clips.
- Essembly.com
- Social networking site focused on politics. Express your political view or argument and find people who support or counter what you believe.
- Vidacool
- Interactive entertainment community and online club for Spanish-speaking youth in Latin America, the U.S., and Europe.
- Friendeavor
- Allows users to connect with other people in the same area who share the same interests as them.
- Petsburg
- Immersing online village for pet lovers, designed for people who love their dogs and cats as if they were their children.
- Pinoy Forum
- Bulletin boards for Filipino community.
- Paradise
- The plans for a deserted metropolis, waiting to be filled in. Explore and write your own part.
- Scott Common Sense Household Tips
- Find household hints and solutions at the Scott Common Sense Community.
- Beautiful People
- Social networking site where members vote on who can join based mostly on physical attractiveness.
- Hip-Hop.net
- Hip-hop social networking community connecting people through hip-hop music and culture. Meet new people and grow your network.
- Fork
- Provides community profiles, cell phone wallpapers, and ringtones. Features the Mosquito Ringtone, a high-pitched ringtone which only teenagers can hear.
- Colonies.com
- Online community where you can share your experiences and upload your photos, blog, movies, articles, short stories, and more.
- Virtual Communities and the Internet
- Offers course description, syllabus, assignments, and more.
- Lozt Paradise
- Virtual community where users have a graphic identity. Features interactive games, live chats, forums, blogs, personal photo album, and more.
- Music Hawk
- Online music community where fans can share their tastes, meet other fans, and participate in group discussions. Music Hawk features band profiles with links to tours, stores, and media.
- Family Routes
- Customisable social network featuring free blogging and photo sharing for families, friends, and communities.
- TruthBytes
- Mechanism for finding out what people really think of you and other people.
- Metails.com
- Social networking space from the folks at Buy.com.
- Local2Me
- Location-based communities for neighbours, small businesses, job seekers, and others to share local advice and information. Groups personalised by distance and age range.
- StayingClose
- Offers the chance to create communities and share files, images, and more.
- Zamboozle
- Internet community with a variety of headlines, Flash games, and active forums.
- Carster
- Global community for car enthusiasts where members can meet others who share their passion for driving and collecting automobiles.
- Weishare
- Connect with family and friends and share personal sites.
- Edgeofeverything....
- Offers chat and forum space for a subversive, alternative take on the world and all things in it. Zen and anarchy, psychedelia, conspiracy theories, and madness.
- GabCity
- Online community where users meet new people, connect with friends, share ideas, watch videos, play games, and enter contests.
- Unieros
- Online community where people celebrate cultural diversity by writing about music, film, literature, and customs from their culture through personal country profiles. Web site offers profiles, picture gallery, calendar, and blog.
- eatlunch.at
- "vote for lunch" application that allows you to share daily preferences with your lunchtime group.
- Bumi-n City
- Track the growth and suggest changes to this virtual Japanese city with the focus on proper ecological management.
- OurStory.com
- Collaborative stories told through timelines in words, pictures and voices. Can be shared online with various privacy settings, printed in books, archived on DVD, and more.
- Sportsvite
- Helps local and amateur sport teams stay organised, and helps players find teams and partners in their area.
- Ebundant Sharing Network
- Enables participants to easily find and share portable, occasional use items such as books, sport equipment, camping equipment, tools, and DVDs among friends, and friends of friends.
- Things I Can Do
- Community allows users to network skills and talents and to share common interests with others.
- CliqueBox
- Allows members to set up unique profiles, view freinds' profiles, and share photographs, groups, and events.
- Dandelife.com
- Combining personal biographies, graphic timelines, and social networking. Tell your story and explore the lives of others.
- Google Groups 2 Beta
- Offering a service where users can start their own email discussion groups and browse Usenet archives.
- Holla At US
- Provides an online community for chatting, blogging, listening to live radio, exploring friends' pages, and designing your own page.
- Imbee
- Social network for kids aged 8 to 14, promoting security and parental controls.
- My Happy Blog
- Allows users to create free blogs as well as chat, play games, rate pics, post to forums, and more.
- Women OC
- Provides an online community for women to discuss books, relationships, politics, and dozens of other topics.
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