PunBB is cool forum software, which is now even cooler that it has spam protection.
Per Soderlind has written an Akismet spam protection mod for PunBB. Per said:
Thank you for making Akismet, I finally got rid of spam from my forum.
I’ve added it to our development page, which now features 24 different application and language implementations of Akismet.
Moderation Queue 
I’ve always wondered if Akismet for a BB (punbb, phpbb) would work, or if by nature and content blog comment and forum posts differ too much. I somehow figure that something spammy for a blog could be ok for a forum post (or maybe it’s just that I’m too used to childish gamers communities 🙂
Next : Akismet for Youtube ? That is needed 🙂
Wow i never thought about using it on a forum system
And YES! Askimet for youtube 😛
ozh: The spam I got – it’s gone now 🙂 – in my forum was similar to the one I got on my blog. Some forums can’t use it, see the 13’th (!) comment at punres
this is great! My punbb forum was attracting spammers. 🙂
PunBB is an awesome, light forum tool. Glad to hear that it can be protected from spam now, too.
And yes, call up YouTube and offer them some expensive consulting services. They need Akismet in a bad way.