Check out CardHub.com's new Social Gift Card Exchange. Like Craigslist, the Social Gift Card Exchange allows users to list their gift cards and sell them to other community members. Card Hub users can also sell popular gift cards (Barnes and Noble, Gap, AMC Loews, etc.) directly to Card Hub and and get compensated for them as soon as they mail them in.
Social Gift Card Exchange not only allows users to get discounts on their favorite gift cards or cash in exchange for unwanted gift cards, but also allows them to trade popular gift cards at a profit.
Because it is tied to Facebook, the Social Gift Card Exchange offers a transparent and close community of buyers and sellers. It is up to each person to decide how many or few people they want to interact with when exchanging their gift cards.