> Researchers found that those who downloaded "free" music – whether from lawful or seedy sources – were also 10 times more likely to pay for music.<p>10 times more likely to pay for music they've acquired, or 10 times more likely to buy music, period? More explicit data is needed. Example: The pirates acquire 10000 songs; pay for 100 of them (1%). The non-pirates acquire 10 songs, pay for 10 (100%). "The pirates have paid for ten times as many as the non pirates."<p>But the results can swing the other way: Example: The pirates acquire 100 songs, pay for 1 of them (same 1%). Non-pirates acquire 10, pay for 10 (same 100%). Suddenly: "The non-pirates have paid for ten times as many as the pirates."<p>So, simply by getting more pirate respondents to participate in your study, you can manipulate the result increasingly in favour of piracy.<p>We need to see the data to be able to determine whether they really corroborate the conclusion.