I was amused to find when I visited the O2.co.uk website with camino, an alert box popped up saying "Your browser is out of date. Would you like to upgrade it now for a better user experience? (Highly recommended)".
Of course I clicked "ok" as I am always up for a better user experience. I was sent to this page: http://www.o2.co.uk/browserupgrade?check=Netscape which offered me a shiny new version of netscape to replace my outdated Camino. The icing on the cake being the message, "There's no version of Netscape 8 for mac!".
Here's the code that prompted the upgrade; a choice piece of hard to maintain browser detection.