As easy as online shopping is, several Web sites are offering to make it even easier.

The sites offer up tens of thousands of promotion codes to the Internet's most prominent retailers.

Web sites like Retailmenot.com and Couponcraze.com make the codes easy to find and available to anyone.

A recent survey showed that online coupons drive consumer spending, and shoppers who regularly use them say there are no strings attached.

The codes can get buyers anything from free shipping to savings on an order. The sites list coupons for everything from candy and clothes to laptops and lawn mowers.

Popular Online Coupon Sites

Retailmenot.com

Couponcraze.com

Ableshoppers.com

Couponalbum.com

Couponcabin.com

Couponchief.com

Couponshack.com