Art-napping is the abduction of art
Art-napping originates from the word kidnapping ping (which involves the abduction of children). Stolen art is often bad to sell because it is well known art so everyone that it is stolen. Today, more and more art is kidnapped: The art is stolen and only returned when a certain amount of ransom is paid. Sometimes the original owner is willing to pay the ransom to get the work of art back in possession, but often it is the insurance company that pays the ransom. The reason they do this is because the ransom often costs less than the insured amount to pay out.