GaryK - 9:11 pm on Nov 9, 2008 (gmt 0)

Jim, I hope I'm not picking at nits, but I can cite over two dozen Gecko-based user agents less than rv:1.7.13 that aren't Camino, Firefox, Netscape or SeaMonkey. Granted they aren't all widely used, some are alpha/beta versions of Firefox, but I see all of them in my log files every couple of weeks. I'm only pointing this out because the OP could run into problems if relying only on weeding out the browsers already mentioned. :)

Firebird
Granpadadiso
Minefield
Phoenix

ACommunicator
Amico Alpha
Chimera
Danger hiptop
Desktop/LX Amethyst
Epiphany
FireCat
Firevulture
Foxybird
Galeon
IceSquirrel
Ideal Browser
Lightninglemur
Mnenhy
Moongoat
Moonphoenix
NetFront
OpenVMS
Seawolf
Spaceoyster
Superchipmunk
Superkoala
Superpig
Sylera
Thunderbird
Waterbaboon
Waterunicorn
Waterworm

ADDED: Samizdata, I was posting while you were saving. :)

[edited by: GaryK at 9:13 pm (utc) on Nov. 9, 2008]