R U 2?

Now there is FINALLY a way to check if your site (or any other) is actually web 2.0 COMPLIANT.

http://web2.0validator.com/

With out a doubt.

BUT, before you check the validity of Web 2.0, hadn't you better check your DESIGN?
I think so, so go...

http://www.sitepoint.com/article/application-fluff-hot-air/