slef - 1:23 pm on Oct 3, 2008 (gmt 0)

Third-party checkers do have some false positives, but most implementations (like the wordpress Typepad plugin) put them in a bucket you can check and retrieve non-spam ones from, which is less work than deleting all the spam from.

I don't mind trivia questions as long as they're really trivial, presented up front and don't depend on cookies or javascript.

What really irritates are sites that let you spend all your time writing a comment, then without warning put up an eyetest I can't pass or require cookies/javascript/other-restricted-resource and blank my comment if I enable it.