|You might want to add support for Flock.|
User agent string: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8b5) Gecko/20051102 Flock/0.4 Firefox/1.0+
Homogenised form: mozilla50(x11;u;linuxi686;en-us;rv:18b5)gecko20051102flock04firefox10+
Detected as: FireFox
I don't personally use it, so I don't know if you'll add something that nobody's using, but I figure it couldn't hurt to ask.
And just a minor quibble, it's "Firefox", not "FireFox".