I installed the Spam-Karma plug-in for WordPress last weekend on my family blog, and it’s working great, judging from the batch report it emailed me this morning:

Spam Karma Digest Report:
10 comments digested since last report (mmm, yummy!):

=+ Comment #1 Reason(s): Used HTTP_VIA header. OSA: Code or time not in submission. KARMA: -12 Treatment: hell Comment posted on Post ID: 50 Added Author IP to auto-ip list (snip). Author : cialis Email : snip URL : snip IP : snip Comment: 1817 Well said += ...