Wired has a pretty interesting commentary piece about chatting and playing WoW, go give it a read...
Recently I logged into World of Warcraft and I wound up questing alongside a mage and two dwarf warriors. I was the lowest-level newbie in the group, and the mage was the de-facto leader. He coached me on the details of each new quest, took the point position in dangerous fights and suggested tactics. He seemed like your classic virtual-world group leader: Confident, bold and streetsmart.
Read the Rest...
http://www.wired.com/gaming/virtualworl ... tiers_0617