What+is+Web+2.0?

words used to describe 2.0: Open, communicative, contributive, interacting, create new content, mixing global with local, collaborate, inclusive...

O'Reily's list compairing web 1.0 and 2.0:


 * ~ Web 1.0 ||~  ||~ Web 2.0 ||
 * DoubleClick || --> || Google AdSense ||
 * Ofoto || --> || Flickr ||
 * Akamai || --> || BitTorrent ||
 * mp3.com || --> || Napster ||
 * Britannica Online || --> || Wikipedia ||
 * personal websites || --> || blogging ||
 * evite || --> || upcoming.org and EVDB ||
 * domain name speculation || --> || search engine optimization ||
 * page views || --> || cost per click ||
 * screen scraping || --> || web services ||
 * publishing || --> || participation ||
 * content management systems || --> || wikis ||
 * directories (taxonomy) || --> || tagging ("folksonomy") ||
 * stickiness || --> || syndication ||

Other definitions:

applications that facilitate interactive information sharing, interoperability, user-centered design, and collaboration on the World Wide Web. ...

dynamic and shareable content and social networking

users participate by generating their own content