If [the] primary value to a user depends on the participation of other users, it's Web 2.0.That's the most succinct definition of web 2.0 I've seen.
July 20, 2007
Laurence Hooper, a very talented director of products who was at AOL, is blogging. As customary for bloggers, he takes a stab a defining Web 2.0. He nails it:
Posted by about me at 4:17 PM