I had some guild members tell me that up to level 30 dragging a low level alt around killing stuff like crazy in an instance is pretty fast at leveling. But they told me at 30 the exp you get drops so much it isn't worth it anymore.

I have not tested this out for myself, but plain on it later to help gear my 2nd box.

Another reason why I don't do this is to level is because I want both toons to level at the same time. That makes it so I can buy all the same spells / pet books / talents and do the same quest all at the same time.

I also find that I'm leveling a little slower than I did soloing, but its easier. Because I do collection quest, I end up killing more mobs and gain more exp while doing a single quest. I'm usually at a higher level starting most quest than I was when I soloed.

(I have 2 warlocks i'm leveling but I have a lvl 70 hunter that on a same account so I can only power level 1 warlock)

Ziie