Rated 5 out of 5 stars

Please, make this extension compatible with Firefox 5 - right now it generates broken delta pages which lack CSS styling and images (I'm using UpdateScanner with Russian Groupon: http://www.biglion.ru/)

This review is for a previous version of the add-on ( 

Try the beta release

There's experimental support for Firefox 5 in the latest beta release. Click "Install Development Version" from the main addon page (https://addons.mozilla.org/en-US/firefox/addon/update-scanner/)