If you already have a Gamer Launch account connect your Facebook account on your user profile first before using Facebook connect to login. Otherwise you may end up with a new account.
So, you've leveled to 100, got WoD flying, and a level 3 garrison. What next? Followers, of course!
This WoWHead guide is your ticket to 17 Ally (or 14 Hordie) followers in about two hours time.