Usability 
Holiday shopping can be a budget buster. One way to save when shopping online is with coupon codes. Coupon Album, one of the larger coupon sites on the web, now has a mobile friendly version.
It's a simple, low bandwidth site which should work on all phones. It has a dozen featured deals on the front page, but if those aren't helpful head Coupon Album's best feature, the search box. There are a number of mobile coupon sites but Coupon Album is the first I've seen that offers a search option. In my tests the search returned quite a few relevant deals for common queries like "cameras", "Amazon". Searching by store name seemed to work better than by product
It's not perfect though, I was unable to find any coupons for prepaid mobile refills although they are a dime a dozen of competing non-mobile coupon sites. Source OkOk via Mobility.mobi