GPS function in Canon 6D

Hi Guys,
jus wondering, since Canon 6D have a GPS function, how about does this GPS feature show up in my pic files?
ie only when i open the files via specific programs? eg Photoshop Elements 11 ?
how about facebook ?
there is a function in Photoshop Elements 11, to post pics directly to Facebook....will that show the location?
how about do you use the GPS function? - or make use of this special feature ?

cheers!