[thelist] browser detection for fun and profit

[Cake]

	"Apple's Web site now recognizes what browser you are using - as
long
as 	you are surfing with its new Safari Web browser. A small Safari
icon 	appears in the top-left corner of Apple.com with the message
"Welcome 	Safari user"




Any idea how they achieve this - since Safari can spoof its identiy,
there must presumably be a unique object or combination of object
returns that can be used to identify it uniquely?