A new Firefox add on has sprang up called RetailMeNot which basically observes when you are on a shopping website like amazon.com and automatically displays available discounts for it. I have been using it for a while and it seems really cool. I have yet to actually buy anything using on the coupons but still it is a really nifty extension to have in Firefox. Originally posted on Lifehacker by Adam Pash

I came across this post from lifehacker posted by Tamar about Deal Locker which gives you an easy to find discounts and coupons for different websites like amazon.com for example.