>>10 I don't know how they do it on a large scale. I don't know if anyone does, they're pretty secretive about how they do their work. However, if
I download any torrent on the face of the earth, I can see anyone's IP address that is connected to me. Their IP is wide open and I can use that to track them.
Torrenting is not safer because you can't be criminally charged for downloading illegal content, only distribution as of this moment. All they have to do is connect to a peer, and they know their IP. Centralized means they have to procure the information from the website itself, which may or may not be easier depending on the site.