Re: bbPress Top 100 September '08 update
I’ve done some research (and actually got an email from the find-answer owner out of the blue today) and I believe the site/request are unrelated.
But it does prove that it would be a wanted plugin.
Google/Yahoo might not like all the duplicate content however so “noindex” might be a good idea to prevent being search-engine banned.
Another consideration is that I believe bbPress keeps a full index on post text, so the table size for posts would become non-trivial for such a forum.