These days almost everyone I know, when they want to listen to a song and don’t own it, goes to Youtube and listens to it there for free. Lots of the versions there are not authorized, don’t have ads and so on. I don’t think I’ve seen copyright infringement on such a large scale in my life as I do on Youtube. It’s not difficult for songs to be downloaded using an online service either, so even though everyone seems to stream easily now, they could also download them if they wanted.
How does Youtube keep getting away with it? I guess reading how they beat Viacom would tell me.