A new plugin called LMSpamBotBehavior has been released. This is a spam fighting plugin implementing the LMCommentModerator SpamCheck API. It analyzes how the client of the comment author behave when a comment is posted. If the client fits a bot behavior profile, will the spam check return Spam.
The plugin can be downloaded from the LMSpamBotBehavior plugin page.
Spam and off topic comments will be deleted.