Ive actually been leery of mentioning other forums here.
But Ive been a member of QuartertoThree for possibly longer than Ive been here. And it was long the only place that you could get into Dom3 games with Shrapnel staff and Illwinter developers (not so much anymore though so dont go chrging there hoping for that)
Im also a proud Goon on SomethingAwful. Their forum, irc, and Dom3 tracker server are excellent examples of how things once were and hopefully could be here.
There are also a number of non-english forums (swedish, french, and italian come to mind) that I get hosting requests from. And a number of people on UseNet such as comp.sys.ibm.pc.games.strategic or groups.google and groups.yahoo. Altho it might not seem so here, my server has never been busier. I have over 100 games running at the same time fairly often now and have begun hitting limits again on the number of mods, maps, games that Dom3 can "see".
Its been hard to not mention other forums and chats. Particularly in light of discussions about how Dom3 is "always played" and how games "always progress" or the "de facto standards" for how things are done. Saying "you mean on this forum" always generated a request for the other forums which I was enjoying too much to mention
But since they are mentioned anyway I will chime up and hope that my name alone no longer generates extra interest..