Expand the “Have a Gift Card?” box and manually enter the code “grouponcitispecial”. Note: you have to type it out instead of copying and pasting (that doesn't work).
This offer is valid for first-time customers only. The offer is available through Citi Specials, must be redeemed by 09/30/10 at 01:00 PM ET.
Alright, I updated the title to clarify what is going on. The credit worked for me by the way. I opened an account a while ago but never bought anything yet