It isn't possible to completely "kneecap" the spammers, but we keep raising the bar to try to keep DBForums from becoming advertising central for the folks that are willing to steal disk, bandwidth, etc from us to advertise to the readers of DBForums.
We are working on ways to make it easier for spammers to buy advertising from DBForums, which will in turn allow us to legitimately make it much harder to spam DBForums.
-PatP