Rated 3 out of 5 stars

its a very good idea, but neither 0.4 nor 0.6 works.
passwords can be saved to wallet but cannot be read and pushed to the form.
if you are testing, be sure you have disabled password saving in firefox.
if not, firefox is managing your passwords and not the plugin, so you are mistaken thinking the plugin works.
5 points for idea, 1 point for function makes 3 points.

This review is for a previous version of the add-on (0.5).