RetailMeNot, an online coupon-sharing site from the founders of BugMeNot, has been around for a while, spreading the joy of savings both far and wide. Now, with the RetailMeNot Firefox extension, keeping informed of the latest coupons is as simple as browsing the web.

With the add-on installed, you are automatically informed of sites RetailMeNot users have shared discount coupon codes for. If you browse to the Amazon website, for example, a notification window will drop down from the menu bar signifying that there are coupons available. Clicking on the "View Coupons" button will open a new tab and take you right to the coupons for that particular site.

RetailMeNot assures us that no data is sent back to their website, and that the plugin will not adversely affect your browsing experience (though, if you read the user reviews, they are complaining of exactly that).

The RetailMeNot Firefox extension works with Firefox 2 (sorry, Firefox 3 beta users).

[via Softpedia]