I leveled from 73 to 80 this weekend doing AV (was AV weekend) and questing on 3 chars, pally tank, holy priest and mage.

I actually found it quite good. Ok, you have to wait 10-15 min between each battleground but that isnt so much of a problem anymore now that you can sign in from anywhere and end up the same place after so you can quest while AV'ing.

I didnt have any problem with /afk situations except once where i got kicked - but that was actually ok - spend 2-3 minutes chatting with a GM on a 4th char not in the instance so that was deserved.

But AV's went so fast - 12-15 min each for 100k xp. Pretty decent imo. Very few leachers and a lot more effecient than I have ever seen AV before.

Was kinda getting tired of AV before - half the BG was always leaching so it was really a horrible waste of time.

Didnt have many problems with being a multiboxer there - only bad comment I got was "what a waste of money". But got lots of good comments - (ok was basically the main tank for an entire day - so that might have helped a little)