What are some alternatives?
When comparing Cartercoupons.com and Groupon, you can also consider the following products
RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything
Dealspotr - Dealspotr is like Wikipedia for deals.
CouponNDeal - I regularly checking this out now.
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.
Panda Cash Back - This page is dedicate for Panda Cash Back Website Save Money with Coupons and cash back shopping coupon codes, deals, and cash back