Rated 3 out of 5 stars

This addon is a great idea - however it really should differentiate google services, as it has some side effects, e.g. google site search will not work for websites, so if you are on a website and wonder why you have no search results, there might be a chance that the webmaster is using google site search and google sharing breaks this. Also with this addon the new google instant searh feature will become incredibly slow, not usable at all, however instant search is a PITA privacywise anyway.