This is a bit of spill over from a comment to a post on Bens blog (presently called Refracted Ambiguity with Polar Bear) regarding his old school music piracy.
THEFT – removes the original.
COPYING – duplicates the original, for private use, leaving the original in place.
PIRACY – hijacking and robbery on the high seas.
COPYRITE INFRINGEMENT – producing unauthorised copies of the original for profit.