Resources on chess variants While posting this question, I stumbled on this list of variants from Wikipedia, which I must admit is totally awesome. 
I know a few online servers allow a few variants, but am not aware of places where many variants players would gather, which would they be ?
Are there famous clubs for on the board variants play ?
Collections of fairy chess problems ? 
This list of fairy pieces is not at all bad, but could use a few more easy-to-understand diagrams, and some art for representations.
I guess there's enough to say on this topic for books to be published on the subject ?
Unfortunately I don't know of a chess server where they play chess variants, (see update below) but I have a few other resources.  

The program Winboard has several variants, including Shogi, Xiangqi, Shatranj and Atomic.  

I also found a very cool blog, the guy there goes over a lot of chess and checker variants.  Its pretty cool!
Here is a article he has about Fairy Chess.

There are also several books written on the subject including:


Chess Variants &amp; Games   
Popular Chess Variants


And the Encyclopedia of  Chess Variants 

Update
In my ramblings I ran accross this page, indicating that the ICC allows chess variants.
Quote:  


  ICC offers a number of chess variants.  


I also found a book on Fairy Chess. Unfortunately it appears to be out of print.