Piracy actually good for music sales?

Another day, another article that actually points out that downloading music illegally may be beneficial. From an article on Ars Technica, it suggests that people who download music illegally actually buy 30% more music than those who don't.

And who says Piracy is killing music sales again?

Seriously, music execs: change the fucking record.

Article available at:
http://arstechnica.com/tech-policy/2013/01/new-music-survey-p2p-users-buy-the-most-no-one-wants-disconnection-penalties/