should be standard Rated 5 out of 5 stars

Actually I don't understand why this is not includes in Firefox itself. Most people may not use a specific classic search engine all day, BUT with the ability to add search-functions of websites or bbs/forums it is really handy.
It would be nice though, if the search terms would be copied into clipboard - or the firefox site-search field.

This review is for a previous version of the add-on (0.4.6).