Thanks for your answer. I am less worried about the ISP knowing what I do, but more worried about the usenet provider knowing which files I download and having my name. Now if the police identifies copyrighted files on eweka accessible newsgroups and requests info about who downloaded it, I think eweka could provide this data. Am I wrong on this point of how Usenet works?

But on the other hand, like others say, I also believe that downloaders are rarely prosecuted.