Came across a Facebook ad about MMA Shirt Shop. Cool concept. They are paying $1000 for winning designs on their Contest Page (http://www.facebook.com/pages/MMA-Shirt-Shop/184171503438?v=app_95936962634). Sorry, I don't have a PRO account.
They are also giving away 20% coupons on their website www.mmashirtshop.com.