As per http://punbb.informer.com/forums/post/123387/#p123387 Garciat will no longer be maintaining this extension.
As such I have started work adapting it, and making it a bit more user friendly.
So far I have:
Created a new page for it - rather than hide the spam on the extensions page
Added a 'spam' notification link into the header for Admins only
Hidden spam posts until they are dealt with - admins and moderators still get to view it
Changed the default ban period from always, to one month.
I have a few ideas to add even more features:
a setting to only check guests and new members (upto x posts)
ability to set the ban period
mass 'not spam' - rather than one at a time
mass 'delete' - rather than one at a time
add a spam count?
mark a post as spam.
The last 2 aren't that easy, so I'd be interested to hear if anyone wants those features. Plus anything else that I may have missed that may be useful