I've been setting up a Trac instance for Buildbot, to make it easier for people other than me to publish advice and tips in a persistent and easily-searchable fashion, also to make the Buildbot web page a little bit less ugly. Trac is quite spiffy, and I've been looking over the Trac Hacks page at the wide variety of neat plugins that are available. In particular the one that exposes wiki-page editing via XMLRPC (in conjunction with the emacs wiki-editing tool) is quite intriguing.

I hope that one day Buildbot will have a list of plugins like that.