Given that SpamPaint works with Akismet, it would be highly cool if it were integrated with WordPress.com as a Dashboard option. Here are some details:
Let’s assume a spam bot comes to a weblog and leaves a comment. Let’s also assume this blog is using the Akismet plugin to recognise spam. Now that the blog software knows it has been spammed it will either delete the comment spam or, if we are lucky and the blog is contributing to SpamPaint, it will be automatically sent to the SpamPaint engine.
After receiving the comment SpamPaint will analyse it. For example: comment spam nearly almost includes links to websites (after all, the intention of comment spam is to promote websites) so SpamPaint visits these sites and grabs the colors and some images. SpamPaint also checks from which country the spammer is and shows this in the generated graphics. That’s just two of many steps.
Looks like we can't set this up on our own; it would need WP.com to set it up either as an option or as an automatic thing.