I’ve just installed the Mollom module for Drupal, lets see how it works. I’ve read so much praise on the official Drupal Planet (read for example this, this or that) that I could no longer resist. Installation and setup is a breeze, OpenID is supported on the Mollom website.
As you might have read I’ve ported the Spam module for Drupal 6. It worked fine. Haven’t got a problem with it at all. But I recon Mollom is the way to go.