b1ack1ist
so, mt-blacklist hits an invisible wall around 3800 entries. it's not really a "bug" but more of a limit. after that, you must clean up your entries before you can add new ones... deleting and combining entries with the use of regular expressions.
which i suck at and didnt want to take the time to brush up on.
but, over at the alumni site, comment spam is creeping back in. as a stopgap, I loaded a global .biz ban into the blacklist, and hope that nobody legit is using them. that let me clean out 30+ entries just at first glance.
last week I managed to clean off 15000+ spam comments (accumulated since Sept), and I don't want to do it again.