So after 6.0.2, There were major changes to leveling. Obviously they squished the XP, Added Dungeon completion XP, and nerfed dungeon quest XP to the ground.
Since then, I've had a friend power level me from 1 to 70 in a matter of 5-6 hours of gameplay. Using dungeons in Vanilla content and heroic dungeons in BC content. However it seems now once hitting 70, We hit a major brick wall. The XP given from getting run through a dungeon has dipped bigtime. Has anyone found a good powerleveling technique for 70-80? How about Cata and Mop leveling as well?