Main Factions i.e. Trolls/Goblins/Panda's etc.
Is just finding quest locations the fastest way to farm for these, or putting on a tabard and doing dungeon runs (either heroic or lower level dungeons that provide less rep IIRC)?
Thank you for the answer ^_^
And EDIT: To make this relevant and not inferred, this is for Ambassador I believe it is called.