If you're a MT-Blacklist user (and you should be), there's a new maintenance release, version 1.65, available. If you've got version 1.64, it's a minor change to one line of code in Blacklist.pm. That change was added because some spammers have gotten clever and started using URLs with the ASCII code for a period (%2E) instead of the period; as a result, you'd get http://www.spamsite%2Ecom in your comments, which would make it through even if spamsite.com was blocked. It's a quick and easy update - just upload the new files and you're done.

Looks like the new MT 3.1 compatible version will be out in another two weeks or so. I need to think about when I want to upgrade. If only babies came with a fully configurable nap module...