Web 3.0 = monetizing (seriously) Web 2.0 = web of serendipity

How many Web 2.0 applications are truly monetizing at a level that makes their businesses stand (financially) on their own? I have been thinking of how to define Web 3.0 in relation to Web 2.0 (I know there are many people who would either put 3 into 2.0, or deny Web 3.0 to begin with). Here's an answer, based on a very fruitful conversation with the folks at Peer 39:

Web 3.0 is/will REALLY monetize Web 2.0. Hear me right: I am not saying 2.0 is useless, it's quite useful actually, and I don't think 3.0 could really be successful on a grand scale without 2.0. Because 2.0 has provided access to data without which 3.0 cannot exist (of course we can all put semantic metadata on the entire Internet, but who will do that?).

Web 2.0 is great because it provides the data pool; I'm not so sure it will stand financially in and on its own; 3.0 is about developing smart apps that will do something to that data (more than "SELECT WHERE" and cool mashups that is). I mean, apps that will use this data to derive information/new data/ that was not there before; this is what I mean by Web 3.0 = web of serendipity.

That is, if Web 2.0 is 1 + 1 = 2, Web 3.0 = 1 + 1 =3. What do you think?