You can use this facebook app to get one of two shirt codes, Paragon or
Renegade. If you share it with 5 friends you get another shirt code.
You could theoretically use two accounts to get both shirt codes and share
with 5 friends to get the third code. Shirt codes are gender specific so
make sure you pick the gender of your avatar.
Link: https://apps.facebook.com/xboxmasseffect/
