I've seen multiple spambots spamming the same things. I've even seen spambots spamming the same things as spambots that were banned months before.

Do you blacklist known spam payloads? Or require posts containing known spam payloads to be moderator-approved?

Yes and Yes.

--jeremy

Does that include payloads carried in signatures?

For what I hope are obvious reasons we don't publicly state exactly what measures we take. What I can say is that we take spam prevention very seriously at LQ and spend a huge amount of time on that particular issue. I think spammers are a bit more resourceful and clever than most people realize. If you saw the amount of spam we catch and automatically block I think you'd be surprised (and we do so with ZERO false positives being a major goal; we'd rather let a small amount of spam though which can be manually cleaned up, vs blocking legitimate posts).

--jeremy