Just saw that Jay Allen has updated the fantastic plugin for Movabletype, MT-Blacklist, to version 1.63. This version supports the latest version of Movabletype 2.661, and incorporates these changes/additions:

• Fully compatible with Movable Type version 2.661
• Added arbitrary text/regexp to despam search
• Added NO FILTER to despam search to get LastN comments/trackbacks

If you’re using Movabletype, this plugin is highly required, as it helps you to fight back the comment spammers that has been coming out of the woodworks.