Fat Wallet

Consider FatWallet the mother of all money-saving sites. It combines a deal forum, coupon search, and in-house cash back program, making it a one-stop destination for all things bargain-related. Though it specializes in online deals and sales, you can also use FatWallet for comparing other purchases too, like seeing which gym offers the cheapest membership, which car company offers the best rebates to combine with the government's new cash-for-clunkers program, or where to find cheap lobster.