The lawyers, for their part, shut down or seized swap sites such as Napster, doing more harm than good. As they prosecuted peer-to-peer home users - 20,000 so far, most of them teenagers - public opinion turned against an industry that criminalised its customers. Attention is presently focused on the state universities of Washington and Oregon where deans, citing academic freedom, have refused to pass on threatening letters from the Recording Industry Association of America (RIAA) to students in their care. The RIAA is talking of suing the universities. Altogether 4,400 students at 158 US campuses are facing demands to pay $3,000 to $5,000 for alleged piracy. No industry has ever devised a more conclusive way of destroying its customer base.