Wonder guys do it again:Wonder sidebar Rated 5 out of 5 stars

This is an ingenious app.
Added bonus: if you get your email through your web browser, it will side-bar reference how-to videos relevant to your email discussion. And the wonderhowto troll stays discreetly on the bottom of your window, there when you need him, out of the way when you don't. Brilliant!

This review is for a previous version of the add-on (1.0).