To answer the person who said that we shouldn't do anything about it and we shouldn't tell him how to run his life:

If you don't want to join us who would like to fight such behaviour on Gnutella network, then step aside and don't tell us how to run our lives or how to behave.

In addition to other measures, I suggest that each one of us should check the files that they have downloded and 'clean' them regularly.