okay sweat, and how would you go about finding one of those?
Try handscanning exchanges with known voice bridges/chatlines on them, you might get lucky. The kind of bridges RBCP mentioned are few and far between now, but you might get lucky and find one.
and can people find the phone numbers of the people who are connected to a voice bridge? (i'm pretty new at this phreak thing)
You can't find out the numbers of the incoming callers, but the phone company, feds, police, et. al. have access to that.