When we switched from standalone WordPress to WordPress MU for the Walker Blogs, we also switched from Spam Karma 2 to Defensio. Spam Karma 2 had its funky interface issues on the admin, but it worked really well keeping our comment spam at bay.
We’ve been using Defensio for not quite two months, which should be plenty of time to train the filters, but our statistics aren’t that great:
Recent accuracy: 97.10%:
- 3708 spam
- 147 legitimate comments
- 135 false negatives (undetected spam)
- 12 false positives (legitimate comments identified as spam)
I’ve never had great confidence in Akismet, but perhaps my misgivings are unfounded. Are there any other spam comment plug-ins people like? What have been your experiences?
What I’d really love to see is a comment plugin that used an Akismit-like baysein filter for catching the big stuff, than Amazon Mechanical Turk to test the stuff it’s not sure about. I’d pay $0.10 a comment for that.