Even attempting to determine the percentage of error in a non-probability sample (self-selected) is futile.. Out of the 1625 registered users, only 110 voted during 1245 views and 70 posts. Unfortunately, the views are not unique so it can't even determine who read the poll and decided not to vote.

What you can then statisticly conclude is nothing more than of the 1625 users registered, atleast %6 of them have some ammount of mp3's on their empeg that they don't own the CD for. Of that %6, I would say that %30 of them are "illegal" copies, where the rest fall under fair use allowances. Ttrading between friends is legal, and downloading doesn't differentiate between free and illegal downloads.. I just downloaded 8 tracks from mp3.com, all legal.