Rated 5 out of 5 stars

This used to be great when it was up to date but it's not. Time to move on. I highly recommend the alternative plugin Open With, which doesn't give you a tab view of IE, but does gives you the ability to launch any installed browser (eg Chrome, Opera, IE) in its own window, from the Firefox tab menu.

This review is for a previous version of the add-on (1.5.20090525).