This Creature is Lore

Okay, Mozilla Firefox browser users, you know that search engine thing near the upper right side of the browser window?  You know you you can go to find more search engines on the very bottom of the dropdown menu?

Yeah, well, has anyone successfully located and installed a Youtube search engine?  Whenever I use the feature where you can search for different search engines, all I get is a bunch MP3 or video converters.  I know there -used- to be a Youtube search engine option there, but cannot find it now.  =[