Rated 5 out of 5 stars

A tremendously useful extension. With FEBE I synchronized my Firefox environment across 4 computers in less than 2 minutes each. Reformatting or upgrading computers? FEBE can make wrap your entire Firefox environment--bookmarks, passwords, xtensions, perferences--into a single XPI. Install that one extension in your new Firefox installation, and you're back to business as usual.

This review is for a previous version of the add-on (6.1).