Groupon: $1 credit.

Who's a Groupon* lover? Everybody! Now the deal-sharing site has a special promo code that will give you $1 in credit toward your next online coupon. Just go to My Account and then Redeem a Gift Card on the sidebar, and enter GRSLICK.

*That's my referral link; if you follow it and create a membership, I get... something. I think.