[@robkk Moderator 11 years, 6 months ago]

if you want use this plugin and provide use some information on how it does for your installation.

it requires Akismet, and basically it rescans all your topics and replies for spam.

the settings should be in tools > bbpress spam cleaner.

https://github.com/lenrsmith/bbpress-spam-cleaner

another tool that might help is wanguard.

https://wordpress.org/plugins/wangguard/