Rated 3 out of 5 stars

I find this addon very useful, but it also slows down firefox considerably and the new way to determine the sidebar's with is simply ridiculous. While before I was able to drag the sidebar to whatever width I wanted now I am limited to 3 widths, and I can only access them trough an awkward key combination. I really like it but I'm seriously thinking of not using it any longer.

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