because of torrents and P2P I found Family Guy and CSI and have subsequently purchased All 4 of the released seasons of Family Guy for DVD, the first volume for PSP, the Stewie Griffin Movie on DVD, the first season of American Dad, and have watched new episodes on Fox, thus contributing to their "viewers" and seeing the ads. I also have purchased a season of CSI, am looking to buy the rest, am waiting for season 6 to be released and have bought some episodes on itunes.
Without the aforementioned mediums I would have never found those and never spent any of that money, the same can be said for much of the music I have purchased, as without Kazaa, Napster, Ares and Morpheus I'd have never heard many of the bands I have purchased songs and cds of.
People always argue that if I hadn't gotten my music free I'd have had to pay for it. Not true, I just wouldn't have it. Having had the ability to download some of my music is what caused me to end up spending money on that which I really liked.