Working on It Stronger Anti-Spam Settings

Seems lately we've been getting a lot of human spammers, like this one: http://kh-vids.net/members/stewins.63643/

Anything that could be done to remedy this?

 

Our current anti-spam measures are aggressive enough to prevent any messages from actually being posted, as they go straight to our moderation queue. As for member registrations, I change the settings every now and then to try to find a the sweet spot of rejecting bots without catching any genuine user registrations. It's not something I would detail publicly, however, for obvious reasons.

It's a concern of the staff anyway; I don't imagine most users notice bot registrations.