Rated 5 out of 5 stars

This is one of the more useful addons that I have come across. Great for research completely streamlines the search process. Configuring new search services can be a bit daunting though.

Here is a video overview of the process:

http://www.YouTube.com/watch?v=HLa3mGCRqgs

This review is for a previous version of the add-on (0.4.2).