Written by Professor Thomas M Connolly
Web 2.0 is a second generation of web-based communities and hosted services — such as social-networking sites, wikis, and tagging — which aim to facilitate creativity, collaboration, democracy and sharing between users. Like many important concepts, Web 2.0 doesn't have a hard boundary, but rather, a core of concepts.
A few examples of Web 2.0 websites and concepts are:
- Flickr – to share (upload and download), comment on photos online
- BitTorrent – to share (upload and download), files, audio, video, documents
- Wikipedia – to create and share factual information
- You Tube - to share (upload and download), comment on videos
- Second Life – virtual worlds allowing, shared social, commercial and educative activities
- Facebook – social networking (user creation of online communities that share common interests or wish to network)
- My Space - social networking (user creation of online communities that share common interests or wish to network)
- Multiplayer online games – to create groups and teams to complete games
- Blogging – creating text and image content to share and permit comments and discussions
Web 2.0 also encompasses digital and all-ways on, communication. This communication is expressed not only by the possibility of communicating with other users on the type of websites listed above but also by other means. These include, cellular telephone, SMS, online chat, email, VoIP, instant messaging, multi-channel communication services such as Elluminate.