Re: bbpress is slow like godaddy says?
You are unaware of very important concepts like hidden forums that require carefully constructed mysql filters. SuperCache would have to maintain several versions of the same page for different users. By the time it’s all said and done it’s almost easier to regenerate the page.
Portions of the page that maintain for all or most users can be cached and that will cause a significant speedup. A complex forum will never be able to cache the entire pages for all users.
I should add that bbpress has a sophisticated object cache that can almost eliminate going back to the mysql database for some sessions.