5 stars! Rated 5 out of 5 stars

- worked as it should after installing--no need for me to configure.
- easy to use that even my six year old son understood when he saw me using it--then started using it himself.
- it didn't conflict with my other keyboard shortcuts.

This review is for a previous version of the add-on (0.5.3.1Build201101051500.1-signed).