A good start Rated 4 out of 5 stars

This is a good add-on. Here are some changes that I'd like to see:
- In Chrome you can search with an engine that's not your default by typing "google foo" or "bing foo". That'd be helpful here.
- With the search button and selecting text and right clicking to search, both default to Google even though Bing is my default. The latter of these in particular is a bit jarring.
- It'd be nice to have an option to keep the new tab button. When there's empty space I can double-click that for a new tab and I can usually Ctrl-T for a new tab, but that's not always the case and it's just nice to have that option. Same deal with Panorama.

I think that's it. This is a really neat solution; these changes would make it even better!

This review is for a previous version of the add-on (2.1-signed.1-signed).