Another new code:

S47AK6ME (AVAILABLE)

Using this code when you first sign up will earn you this:

Friendship Circlet
Increases EXP earned by 20% when level 25 and below.

10 Silver Chocobo Feathers
Trade to the Calamity Salvager NPC for special items.
The Calamity Salvager NPC can be found in Limsa Lominsa, Gridania, or Ul'dah.