If you don't know what the Web 2.0 hype is, perhaps you've heard of the "dot com" hype that happened a couple of years ago. Now they're doing it again but instead of "dot com" it's "web 2.0". more info here
Losers like me who haven't been bought up by Google or Yahoo! yet hate the "web 2.0" phenomena and considers it a bad thing. Am I just jealous maybe?
A "web 2.0" buzzword cloud can be seen here if you're wondering if your IT supplier is taking you for a ride.