Look at providing XMPP services
For person <-> person communication, it might be useful to have a communication mechanism which is richer than IRC (although of course, IRC is great for group chats :) ). Servers like XMPP could be a pain to maintain for individuals and is a lot of duplication of effort.
If this is something people are interested in, it would make sense that we provide it centrally like the git server.
We've run XMPP services in the past, it might be worth bringing one back, especially given recent Facebook news. Becuase it'll need an SSL cert that allows it to be fossgalaxy.com, it'll need to be on the same machine as email and our main webpage (so the comms server).