Yes please! Web 2.0 means different things dependent on who you happen to be talking to. I prefer the simpler “encouraging interaction between provider and user” explanation than a more complex covering of the topic such as follows:
“The phrase Web 2.0 refers to a perceived second generation of web-based communities and hosted services — such as social-networking sites, wikis and folksonomies — which aim to facilitate collaboration and sharing between users. The term became popular following the first O’Reilly Media Web 2.0 conference in 2004, and has since become widely adopted.
“Although the term suggests a new version of the World Wide Web, it does not refer to an update to Web technical specifications, but to changes in the ways software developers and end-users use the web as a platform. According to Tim O’Reilly, “Web 2.0 is the business revolution in the computer industry caused by the move to the internet as platform, and an attempt to understand the rules for success on that new platform.”
“Some technology experts, notably Tim Berners-Lee, have questioned whether one can use the term in a meaningful way, since many of the technology components of “Web 2.0” have existed since the early days of the web.”
http://alocalgovernmentwebmanagersblog.blogspot.com/