Do you wonder how people can level from 1-70 in 2 days? They don't really do it in 2 days, they just take advantage of the instance /played bug.
How this works is that when you are leveling in instances, when you zone out, resets, and zone in again, your /played will bug ALOT. It will make your "played on this level" go down to a ridiculous lower played compared to what you should have, and that low /played on your level will add up to your total time played 1-70.
So if you want to beat some leveling records, or if you want to show off your insanely great /played to your friends, just start leveling in instances. And make sure to zone out, zone in and reset alot.
this is a picture :