Opinions on anti-spam method

[eluser]Rick Jolly[/eluser]
I've found this interesting:http://www.snook.ca/archives/other/effec...m_blocker/

Jonathan Snook wrote his own spam filter. He uses a points system like Movable Type. His script analyzes every comment and adds or takes away points based on preset criteria. In the end, if a comment doesn't have enough points, it's canned.