Just ran across this and had to share it:http://www.isit20.com/
Here is a little more info from the web site:
The Web has taken a step forward with the 2.0 patch few years ago, but it's still in beta stage. Some sites have definitly patched their Web and thus are know to be 2.0. However, separating deprecated and 2.0 in everyday life can be quite difficult. That's why isit20.com was created, you will finally be able to discern the real 2.0ness of everything. Submit pictures, rate them and define the 2.0 with the community.
So will you help define 2.0 in the real world? Note - is also mentioned on the about page that this is pretty much a big joke, but should be interesting to see how popular it becomes.