DealMine is a site that provides deals on product discounts, miles, points, and other rewards. If you are searching for that one particular great deal, the DealMine extension may be for you.
After installing the extension, the icon appeared on the status bar. Clicking on the icon provides a pop-up of a mini search page. I typed in 'Digital Camera', erased it, and decided to put the Digital Camera down in the comparison edit box instead, but then it closed the window before I could even type in my query. I tried my search again, it seems if you get too interactive in the query window, it closes on you. Hmmm...
I eventually got the window working and received some results as to where I could buy my new digital camera. The deals displayed were pretty good and DealMine seems to aggregate a lot from around the web.
The DealMine extension for Firefox takes every deal site and provides a centralized location for the deal hunter in all of us. Aside from the hiccups in the query window, I would recommend the extension.