Before I experiment with the many other options, I
thought I'd ask what people recommend.
Hi Dan,
I don't have any experience with MediaWiki antispam solutions but with Drupal I use
http://drupal.org/project/spamicide: "Spamicide adds an input field to each form then
hides it with css, when spam bots fill in the field the form is discarded."
That's not only much more userfriendly as it doesn't require any extra effort from
the user but quite effectiv for preventing spam. I shouldn't be to difficult to use
the same mechanism in an extension.
hth
Frank