The website I am referring to is called Retail Me Not or http://retailmenot.com/
All you have to do is type in the website you are hoping to find a discount code on and it will show sales, deals, and coupon codes for that site.
Trust me on this when I say that there are other coupon sites out there, but in years of online shopping this is the best one I have found for an all inclusive place to find the most recent coupons.
No it is not fail proof, there are some expired codes on the site, but it is user generated so you as a user (if you create an account) can tag a coupon as expired. You can also add coupons that you know of to help other shoppers out!
The good thing is that you do not have to create an account to use the site, you just won't be able to access a few features, which are not totally necessary anyway.
You can browse coupons for inspiration, you can save coupons, make stores as "favorite", and more. The website serves the USA and Canada at this time.
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