The context of the LFG comic has been taken from many many different aspects of very different sources, yes, no objection with that, but the entire context is based in a very large majority on WoW, and not only the charakters, but also the initials whitch are only familiar to WoW players, how is a non WoW player supposed to know the meaning of OOM? What is he supposed to link it with? He doesen't know it means out-of-mana, perhaps not even what mana means, for some of the initials for certain things the comic uses, i'll post the initials for some actions that you encounter in WoW, ergo, in LFG comics.
OOM - Out of Mana.
LFG - Looking for group.
MP - Mana points.
Mana - Magical essence (commonly described as a liquid) needed to cast spells.
WTT - Wanting to trade.
WTS - Wanting to sell.
WTB - Wanting to buy.
Realm - Server
Reroll - Create a new charakter in place of the other, or replace something with a previous one.