Works great on FF6 (with MACR) Rated 4 out of 5 stars

Works great under Firefox 6 (search for and install Mozilla's Add-on Compatibility Reporter to allow it to work) and looks very nice. I do have 2 complaints though: a) there is no way to see the dimensions when working with small areas such as 4px x 4px. Maybe the dimension could also be displayed on the "addon bar" or broken out into a separate movable box? b) as far as i can tell, you can't redraw/reuse the selector without clicking the icon a second time. Other than that, great job but I'm going to have to stick with MeasureIt until those 2 things are addressed.

This review is for a previous version of the add-on (0.1). 

Thanks for your review. I will soon make a full review of the addon to be compatible with the last firefox versions. For your proposal to display the dimensions in the addon bar, I will think about it, maybe it's an alternative for small areas.