The Hive?
Well, I haven't been very active in the last few years, but I've been posting in the Hivemind since its very first thread. It was in Meta (there was no OT forum back then), wasn't called the Hivemind yet, and we basically were just 3 posters in that first thread (IIRC, 4 in the late stages), but we had lots of fun. New Hivers joined in soon after this thread, as they still do today. Others eventually dropped out - and after a long time, so did I.
I tried to get more active again several times, but between not feeling really well most of the time and knowing fewer and fewer of the active Hiveminders, it never lasted for long. This time, it might; I'm feeling better than I have in years.
Heh. Seriouspost is serious. I mustn't let it become a habit; posting seriously just doesn't suit me. Srsly.