Peter Galbavy: I once got a call from a stranger who had just bought a Canon D60 (yes, 2002 it was) and asked why my name and mobile number was in his EXIF under Copyright.
Turns out that my first D60, which I returned after 2 days with hot pixels in the rear LCD, got shipped back to Canon and then refurbed and just pushed out to another (different) retailer. The gent in question went to have strong words with Canon and the retailer.
Please, how is it possible to write the own's name for all EXIF file generated by a Nikon D3100? Not after a photo was taken.