Kind of off-topic but I’ve been trying to dream up ways to make the scrobbling part easier for people. It’s the real barrier to entry, here. I was thinking of writing an MRF where the instance admin feeds it a Last.fm API key, and then from there, any user on the instance can add a Last.fm username into one of the “fields” of your profile, and then finally, when that user posts something, it hits the API and checks for a song other than the most recent scrobble.
But I uh, I’m not entirely sold on that approach.