OpenSearchFox can add search engines to the search box

Opensearchfox is a firefox extension that can add any search engine to the firefox`s search box. just wait until a webpage is completely loaded then right click on the input field of keywords and then click on the "Add opensearch plugin", finally change the search engine name and icon and voila!, you just added a new search engine to your search box.
A handy extension for firefox.


Get it at https://addons.mozilla.org/en-US/firefox/addon/3698