Very good add-on, can also run with FireFox 34+ Rated 5 out of 5 stars

Very good plugin.

If you want to use it on FireFox 34+, you need to change to false, then reinstall Improved searchbar.

[ If your new to FireFox: enter bout:config in the address bar and press enter (Do not add www. or http) Scroll down to double click on to set value to false. ] is already set to false

Hello Rami,
with my addon I set by default '' to false