Educate yourself on this stuff. A lawyer by the name of John Steele has been representing a number of online adult content sites, including Amateur Allure, FTV Girls, and others, and seeking the identities of thousands of people based on their IPs by subpoenaing the ISPs. They claim the IP has been illegally downloading copyrighted adult material. Once that info is found, they harass the user, who in many cases do not know what P2P software is, much less use it or use it for adult content, and harass them for settlement money ($1-5k, it seems). They suing thousands of people at a time, which means they stand to profit millions from this little endeavor, and never need to prove that even a single user actually downloaded their material. Read about this issue, know your rights, and download safely. Avoid or boycott these companies.

http://current.com/technology/92979069_copyright-troll-john-steele-uses-flawless-software-he-paid-25
0k-to-create-in-order-to-generate-evidence-to-sue-1000s-in-torrent-lawsuits.htm