http://www.playak.com
in case you've been hiding your head in the sand, here is a super huge site about kayaking all over the world. It has lots of European stuff, but also tons of spots from around the world. Free to join up so that you can contribute to the documetation of your favorite local playspot and river run.
Yes. It has a message board too, and a very comprehensive list of the large variety of kayaks that are out there.