Bad metadata is the plague of the current long-tail world of Internet commerce and services. Classical music is a fantastic example, as is map data, online shop

Bad metadata is the plague of the current long-tail world of Internet commerce and services. Classical music is a fantastic example, as is map data, online shopping, and pretty much everything else on the Internet. The fact is that good metadata requires human verification and editing, and editors are the last thing any Internet company wants to spend money on.