cheerfulThere are a half-dozen different sites where the books have been discussed. The liveliest of them is Captain Comics, at http://www.captaincomics.us/forums/index.php?board=35.0
There is also Tor's official Wild Cards site at http://www.wildcardsbooks.com . No message boards there, but plenty of bios, author interviews, special "outtatkes" and exclusive content, even some links to old Wild Cards panels at worldcons past.
And last but not least, there's the wonderful UK fan site Wild Cards OnLine, with a wealth of detail about the books and characters. That one can be found at http://www.wildcardsonline.com/
All of them are well worth checking out.
