How to report a player for cheating in World of Warcraft
Reporting another player that is using an offensive or inappropriate BattleTag
General information about the capabilities of Parental Control reporting.
What to do when you've been scammed
A BattleTag™ is a player-chosen nickname that identifies your Battle.net account
Reporting your own behavior won't prevent action.
Information on how to report forum posts
Information about being unable to trade dungeon/raid/instance loot to another player
How to report a guild name in World of Warcraft.