We hang out in #robustirc on RobustIRC (instructions for connecting to RobustIRC).

In addition, there are also two email mailing lists:

  1. robustirc-announce, where announcements about the project in general and about new releases in particular will be posted. Expected traffic is on average 1 email per week tops.
    If you are running a RobustIRC network, you should be subscribed to this list.
  2. robustirc-discuss, where anyone can start discussions about RobustIRC.