How to save BIG in 2013 with 'stealth couponing'

The stars of "Extreme Couponing" make a big deal about how much they save, but sometimes, you don't want the entire store to know you've used a coupon. 

So, if you want to be a "stealth couponer," here's how to do it.

If you've got an American Express card, you can enroll in the Amex sync program and load offers to your card via Twitter, Facebook, or foursquare. Once you load the offer, it appears on your account as a statement credit at the end of the month.

You can also load offers to your card via the Amex app if you're out. 

Amex isn’t the only one that lets you do stealth couponing. Bank of America's Amerideals works the same way.

If you've got fancy restaurant tastes, savored.com can be a good, stealthy way to save money while dining out.  If you book your reservation through their site, you get 30 percent off your bill, automatically, without having to fork over a coupon.

A lot of grocery stores are also getting into the game, allowing you to add coupons to your club card so you don't have to print them out at checkout.

So go ahead and become a stealth saver. Don't worry - it's our little secret.