If you're a multiple search engine hound, this extension's really, really handy! Rated 5 out of 5 stars

This extension is one of those really, really handy & useful extensions. Many times, I like to search for particular text I've highlighted on webpages, but in particular search engines. This Context Search extension lists all the search engines I've installed in my FF's searchbar, & they all show up in the context menu now. I like it this way instead of having to click on the searchbar & choose whatever engine I want to use, which means that if I don't set it back to my "default" search engine, that that search engine & only that search engine will always come up in the ordinary Firefox context menu. Context Search allows me to pick 'em on the fly.

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