Rated 3 out of 5 stars

it would be nice if there where a backup/restore option, because I use more than 100 positions and it's annoying to set them up each time I reinstall ff (because of different crashes, including virus infections...:( )

This review is for a previous version of the add-on (0.7.2.11). 

As another user pointed out, if you go to the Speed Dial settings panel, there's a button in the lower left side named "Settings", which allows you to import/export settings.