Yep, boosting with an 80 pally is pretty cool. I just bought a couple accounts today, leveled 4 RAF toons to 20 with my hunter (speed and insta-kills make those levels fly by) and had just enough time to do a few runs in SM with my pally. I'd forgotten how to do it and wasn't set up correctly, but still one-pulled it without a problem. About a level per pull on all four toons is pretty sweet.

All in all, about 3.5 hours to invite new accounts, get them set up on worldofwarcraft.com, create new toons, configure all the add-ons, and level from 1-23. Not bad.