Just wanted to give a toast to Plastic Jungle.com. They are a site taht buys unwanted GCs.
I saw them on a morning show the Monday after Christmas and I decided to try to sell some unwanted GCs to them. I sold 3 $50 GC to Chili/Macaronni Grill/Magianos and 1 $25 GC to TGIFridays (places I never eat at). I received $40.50 for each of the $50 GCs and $20.00 for the $25 one. I sent them in on December 28 and received my check today (Jan 10.) I'm extremely pleased at how easy it was. After you set up an account and list the GCs you can see what they will pay you for them. You can get it paid directly to your paypal account or have a check sent to you. You print out a prepaid shipping label and mail the cards to them. Once they verify that the cards have the correct amounts, they send you an email saying that you check has been issued. The whole processes only took 2 weeks and I'm much happier having $141.50 in my pocket instead of $175 of useless (to me) GCs.