Dreambook gets it right
I have a few old guestbooks on Dreambook.
Now and then I’ve received notification that spam comments have been posted. But before I manage to come by and clean them, they’ve been removed.
I can only guess that the Dreambook admins are on top of the spam problem and has a centralized system for removing spam. Blocking and removing, most likely.
The Zaharievs came by a few months ago, but haven’t returned. Probably figured out quickly that it’s a spam unfriendly environment!