This extension is an alternative to Xfire's XO Toolbar. It tells Xfire and its Pidgin plugin, Gfire, which webgame you are currently playing. It has no toolbar, just an icon in the status/add-on bar. It adds no search box. Just webgame detection capability.
I did not write this extension. I am merely publishing it on behalf of the author, oGGy of the Gfire Project.
See their website at http://gfireproject.org