Rated 4 out of 5 stars

Makes Firefox sharp in normal mode, especially when auto-hiding the other toolbars. But it does have a few bugs already mentioned by previous reviewers. It appears to conflict with the KrickelKrackel autohide extension as FF won't start in full screen, the Menu Bar stays on. It has to be manually toggled to normal then back to full. Also when going from normal to full screen the Windows taskbar won't disappear, you have to manually click the window tab.

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