TYPEPAD -- I attract fewer than 10 comment spammers a week while serving a minimum of 1000 page views a day here. That's bad news for other people who don't have industry-strength comment spam controls. With fragile defenses, they're getting to service my previous (around 15 a day) spam burden.
As many bloggers discover, you need filters on both comments and trackbacks.
I cannot imagine anything stronger than Typepad's anti-spam filter system.
Margaret Green -- "Comment spam" attracted boatloads of unwanted trackbacks.
Gavin Sheridan -- "rebuilding frequently does not finish and this poses problems for comment spam"
Mick Cunningham -- "Tracking Blogspam"
Previously on Irish Typepad -- "Comment spam round 6"