But not all conversations need hardcore gravitas to be valuable. There's actually a lot of information in a "cool stuff" RT. It says that the person read your status, and liked it enough to share, that tells you a lot about where your tastes align, which has been a facet of friendship as long as humans have been making friends.
I worry that the real "hype" right now is buying into the recent anti-facebook trend.
There will be always be a new hype but Web 3.0 is so 2007 - see http://www.pcmag.com/article2/0,2817,2102852,00.asp