@dansup @pixelfed per-account & instance ranking and build a trust graph and cluster things. Spambots tend to follow spambots, thus they cluster together, normal people tend to follow the same normal people.... this is a method used many times before (pgp web of trust is one example) it does require knowing the full graph for involved accounts, thus that can be harder. I am sure somebody comes up with a trustrank service that can give out a score; then multiple services and if x/y deprio ;)