Rated 3 out of 5 stars

I think Mouseless Browsing should improve performance when loading page, KeyboardNavigation of Google Chrome and NumberFox is too fast, I feel no delay when using those addon:

KeyboardNavigation: http://www.chromeextensions.org/appearance-functioning/keyboardnavigation/
NumberFox: https://addons.mozilla.org/en-US/firefox/addon/numberfox-6420/

It uses simple UI for display number so it's fast.

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