If you're funny, I'll watch forever. Those Plinkett reviews on RedLetterMedia are like 90 minutes long and I would have gladly sat through hours more. If humor isn't your strong suit, then I'd say you'll be most effective getting in, making your point, and getting out. Which is absolutely fine too.I was wondering what a good video length for a gaming channel would be. Mine are usually about 3-7 minutes long, but I still don't know what minute I should aim for.