One of the hardest parts of being frugal and shopping online is that there is so much footwork involved.  Well, RetailMeNot has introduced a plugin for Firefox that makes it a LOT easier!  With it whenever you visit a site, the toolbar will display if there is a coupon for that site!

Now, to make this a truly frugal tool, you can then click over to Ebates, open up that store on Ebates and click on the same coupon to not only get the discount, but the rebate as well!