Pass comments through the BotScout API and flag spam comments where appropriate.
BotScout is a third-party antispam service. It maintains a database of known spammer bots which can be checked to determine if a given IP or email has been flagged as a spammer according to their service.
This plugin checks the BotScout database every time someone tries to leave a comment. If the IP and/or email are found in BotScout's database, the comment is flagged as spam. Use this in conjunction with other plugins such as NoSpamNX and Akismet.
Requires BotScout API key which you can acquire here.
Disclaimer: This plugin is not affiliated with or endorsed by BotScout.
Update: we are listed on the BotScout code page!
If this plugin breaks your site or just flat out does not work, create a thread in the Support forum with a description of the issue. Make sure you are using the latest version of WordPress and the plugin before reporting issues, to be sure that the issue is with the current version and not with an older version where the issue may have already been fixed.
Please do not use the Reviews section to report issues or request new features.