1/3 rd traffic on the net comes from torrents

I came across this article from slashdot, it claims that 35% of the internet traffic comes from BitTorrent. I believe that statistic but am amazed. This article even talks about how bittorrent works and stuff like that. What it doesn't say is that it's a negotation based protocol. So can't just sit there and leech, you will have to share.

BitTorrent Article