Spotify swears up and down that its free music streaming helps curb piracy. But does it really? Yes, if you ask the EU... but it's not the cure-all that the company might suggest. A European Commission study claims that there's "clear evidence" of Spotify reducing illegal downloads, with every 47 streams leading to one fewer bootlegged track. However, that's offset by the lost revenue from people who might otherwise buy songs outright -- there's one lost song sale for every 137 streams. The service is ultimately "revenue-neutral" for the music business, according to the study.