What did you sub to on reddit? I’ve found a music-related instance with just a small handful of people, but I’m already enjoying the feel of it. I hope it turns into something slightly larger, but time will tell. I’d suggest looking for communities that are similar to your tastes and stick around for awhile. The party is early, and I think many are too shy to make a move to break the ice. The more active a community seems, the easier it is for newer people to start sharing as well.