instaGC.com was created in February 2011 and is the top rewards site that offers instant gift cards to its members. Over 100 different options are available (example of a few -> Amazon, eBay, League of Legends, Pizza Hut, Target, Walmart) that you can redeem your points for. Tons of easy offers available with new ones added daily. There are daily, weekly, and monthy offer and referral contests as well. Instagc is a pretty good way to earn gift cards. In just a couple of days you can earn a five dollar amazon giftcard. You won't be getting rich, but it is worth checking out.
