Well, Web2.0 was defined and many people are yet to know about it, though they are living and breeding in it.
Web 2.0 as defined in wikipedia -
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 facilitate collaboration and sharing between users.
While many still argue and debate about the Web 2.0 as mere term and has nothing to do with the world-wide-web, when still people are trying to conceive the web in terms or versions, when half of the world is yet to get connected and many thousands are dying. Here comes Web 3.0. (WTF.. yeah that was what went through my mind first)
Read/WriteWeb reports – Eric Schmidt Defines Web 3.0
He said that while Web 2.0 was based on Ajax, Web 3.0 will be “applications that are pieced together” – with the characteristics that the apps are relatively small, the data is in the cloud, the apps can run on any device (PC or mobile), the apps are very fast and very customizable, and are distributed virally (social networks, email, etc).
He called Web2.0 as a marketing strategy too.
His definition is towards more mobility and connectivity. Hey, Wait a sec! i have been hearing the same stuff for a long time round.
The last post is very special for me for 2 reasons …

