who is making money from Web 2.0?

It is being said that in silicon valley everyday on an average 10 new company shows up and 9 of them die young. Web 2.0 is very vibrant in nature running on millions of dollar in VCs. The question is how many of them are actually making money apart from their pocket expenses surely none of them.

But those who are defining the web 2.0 are making big money in conferences like -