If you get one of the rep tokens from the new troll rares in pandaria send it to an alt, and then they can queue for random dungeons and gain rep before
Mists of Pandaria: Reputation Quick Facts - Wowhead
World of Warcraft Mists of Pandaria Reputation Guide - YouTube
Mists of Pandaria: Reputation Quick Facts - Wowhead
Mists of Pandaria Reputation Boost – WoW Service | KBoosting