Haven't used phpBB in a while so I didn't have a big problem with auto-registrations by spammers then.
But that site/system looks interesting.
Any experience with it so far?
Does it check every post, or can you can you configure it to just check registrations?
Seems a bit "dangerous" to depend on an outside source to check posts, especially on high-traffic boards.
There are a few other anti-spam hacks/mods for phpBB out there.
Have you trid any of those??
http://www.phpbbhacks.com/download/6864 http://www.phpbbhacks.com/download/6697