Forum OpenACS Q&A: Response to Google does NOT index BBoard?
For the record, I wasn't concerned about the google thing at all here, just talking about the single-forum vs multiple forums issue.
I think ridding the URLs of some of the query vars, like you're talking about, is a good thing. It's been discussed before. It's just one of those things that a patient and thorough hacker with enough time on his or her hands needs to go ahead and get done :)