p2p is widely useful technology, but in the minds of regular people, it's primarily associated with movie and videogame piracy. I don't know how common this is world-wide, but at least in my country it's widely known among people who use computers that downloading or streaming a copyright-protected video from a random site is legally in the clean, but p2p may land you in jail or have you paying fines - because it's unlawful distribution, not consumption, of copyrighted material that's punished.