Mollom beats spam

Here's a fascinating chart of spam activity on oD's forums for the past 2 months:

So, has Mollom beaten the site spamsters? It certainly looks as if they eventually learn that their spam messages are getting blocked ... Now we just need Mollom to implement this for Drupal 4.7 so we can apply to the main site and I'll be singing the praises of Mollom to all who care to listen.