If you find yourself running into problems within World of Warcraft, Diablo III, or any of Blizzard's other titles, you might want to check out this brand new Blizzard Entertainment Customer Support channel on YouTube to see if it contains the answer you seek. Currently, there are videos that'll aid you in the event that your account has been hacked, you're trying to figure out the Battle.net authenticators, or you simply want some security tips.