Project Honeypot recently started tracking comment spammers as well as email harvesting bots. Oddly enough, even though they have data going back to March 22, and even though Bad Behavior and Spam Karma have blocked an incredible number of spam comments on this site (Bad Behavior has blocked 3807 connections in the past week alone)…none of the honeypots I manage have trapped a single comment spam.
And no, the honeypot on this site isn’t protected by those plugins.