Already Great, bugs troublesome! Rated 4 out of 5 stars

For Fx 14+, it might need a little bit pickup:

1. as Foxtail said below, to turnoff the boring Fx built-in link tooltip, adding the declaration in userChrome.css:

#statusbar-display {display:none !important;}

2. some CSS prefix -moz- no longer support by Fx 14+, Pls fix it!

THX for your NICE job!

This review is for a previous version of the add-on (1.2.1.1-signed).