Rated 5 out of 5 stars

Great Addon !
Firefox 4 promises to change many habbits.

The xulrunner is light and fast, and this is adapted to launch fast links (such a short google search, etc).

It would be also great to allow websites to install their webapps through javascript eg something like navigator.prism.installWebApp("link")
(with the good warns of course)

This review is for a previous version of the add-on (0.2).