neale: Yes, colin worked on coldmud a long time ago. We still have some of the old sources lying about, as well as a couple of experimental cores. You wouldn't happen to be the same neale who was on the cold dark/genesis mud?
Coldstore was seeded by Colin's desire to have something that would work very well as a testbed for experimenting with both document storage and the collaboration that we've grown to love on various user programmable muds. But I suppose that's what most of the newer text based muds are for these days.
The developers of coldstore tend to hang out on Xao MOO, whose primary focus has become talking about development of coldstore, and various interesting bits of political and philosophical rhetoric and debate. Please stop by. It's a fun time, and an excellent place to get real time feedback if you're stuck on a programming problem at your $job. Or even if you're not.