I’m on Jabber as email@example.com. I’m running my own server, and supposedly other Jabber servers are supposed to be able to contact mine and send me messages. I’m not convinced it’s really working because my test case didn’t seem to do what I expected. So if you use Jabber and want to talk to me, give it a try.
The Jabber guys ship their stuff configured to talk to MySQL instead of to BerkeleyDB. Doesn’t make sense, since the average Fedora Core install has the right BerkeleyDB, but doesn’t have MySQL. Dumb, dumb, dumb. We need to lower the bar to non-commercial chat systems, not make it harder.