M/s: mana gained per second, calculated from bonuses on armor and weapons worn and INT level.
H/s: health gained per second, caluculated from bonuses on armor and weapons worn and STR level.
Tank: character that can take alot of damage and has a alot of health that can also pull all of the enemies
DPS: Damage Per Second. The amount of damage done over a period of time, calculated out.
Gtg/g2g: Got to go.
Brb: Be right back.
Bbl: Be back later.
Rev,Rez: Revive, means a player wants an enchantress to come and cast the revive spell on them.
PvP: Player vs Player fighting.
PvE: Player vs Environment.
Paladin: Mage with strength items and attributes.
Twink: Player who has all the best gear for their level.
Noob: Someone who has played the game for a while and should know better.
Newb: A new player that usually does not know much.
OOM: Out of Mana.