Rated 3 out of 5 stars

Nice, but as Konstantin says, only e bit useful. It should have a function where I put in a Version number of a (new) Firefox and the add-on itself lists all the incompatible add-Ons. Preferably as a webpage with links to the add-on's home page to check for betas or hints to get it work.

This review is for a previous version of the add-on (0.2.20100210).