Spyder_Venom: I guess what I don't get is why it's quicker to match the revs than to use the clutch. It seems like it'd take longer for the engine to climb down in rpm than it would to disengage the clutch and do it that way. I used to have a little Alfetta that I shifted without the clutch. Granted, It's not race engine, but it seemd like it took longer to rev-match than to just blast through it with the clutch.
Also, what about open throttle shifting? Would it be more beneficial (not to the clutch i'm sure

) to shift that way instead of rev-matching? I think they do that in Le Mans. I haven't ever raced on a track so please correct me if I'm mistaken.