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.
Stop Forum Spam is a site that provides free access to a database of known forum and blog spammers. The database provides the spammers email addresses, IP addresses, usernames, spamming frequency, and, in some cases, evidence of their spam.
The plugin can be downloaded from the LMStopForumSpam plugin page.