We have a vibrant and active community of lisp hackers who use StumpWM.

There's a #stumpwm channel on irc.freenode.net.
StumpWM has one mailing list for all manner of discussion related to StumpWM. (click to sign up) stumpwm-devel@nongnu.org.
For other stuff (tips tricks and examples) visit the stumpwm wiki.