Ben Reeves told me that I was wrong about the non existence of Compiz community websites: there are some around.
The main page seems to be go-compiz.org, from there on you will find forums, etc. The page is pretty nice designed and seems to be made by someone who put some thoughts into it.
However, the remaining question is why this page is not spread among the compiz users, and how much you can reach the developers by adressing the forum. It doesn’t look to me that the page is an official Novell thing, but more community hosted – it wouldn’t hurt Novell to help them a bit.
But maybe they are doing good enough without help, would be nice, too 🙂