I've started setting up a WikiWikiWeb for the Phoenyx, which is... 
um, well, look at its own explanation:

http://www.phoenyx.net/cgi-bin/twiki/bin/view/TWiki/TWikiSite

The short answer, it's a groupware tool where anybody can add to 
your website.  Whee.

I'm presently using TakeFive Wiki (TWiki), which is the most 
popular of the Perl-based Wikis.

I'm figuring anybody that wants one, I'll set up a web for their game. 
 I've set up a micro-example for Westwind (being inactive, it's a 
handy guinea pig).  You could have players adding their own 
character pages, and other fun stuff like that.  You could set up 
blogs, your *players* could set up blogs, whatever.

Have a look, see what you think, etc.

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Game(s): The Whole Phoenyx
Listowner tools are found at http://www.phoenyx.net/listowners/