List by Casey Ho
Accounts that engage in spammy activity. May be partially automated, bots, sock puppets, or compromised. Clusters of accounts on this list behave in near-identical ways to one another. Accounts added according to broadly applied objective criteria and not on an individual basis. (275486 total)
List by Shadow Redferne
Spambots, scam accounts and people who spam in replies or tags (EDIT: now including thieves and catfishers as well!)
If there's someone that you think I added wrongly, please let me know and I'll look into it!