Beagle IRC channel: join #beagle on irc.freenode.net
Please note that the Java-based client only works outside of firewalls, currently. Please use the mailing list to request alternatives, if required. Support for Pibb.com was removed due to frequent disconnections from IRC. My preferred client is Pidgin, though I understand mIRC is quite popular for Windows.
If you are new to IRC and the BeagleBoard, this collection of terminology might be useful.
IRC conversations are logged using an IRC bot and stored at http://www.beagleboard.org/irclogs.