Rated 5 out of 5 stars
Oh, what a great idea. That list of other search engines I could/should be using wastes a lot of guilt that could be going towards a good cause or something.
I haven't actually tried this out yet but the concept makes a lot of sense: if there are visual reminders of other search engines, color-coded and transparent at the bottom of my screen, I'll be inclined to click them.
I've previously not liked extensions that overlay stuff on top of search results pages because they are often buggy, very often laggy and even more often useless. However, if all this is doing is formatting a query string into a URL and giving me the option ... I hope it works out!