 The settlement letters urged ISP's to preserve evidence for the benefit of the RIAA and invited the students and subscribers to visit an RIAA website for the purpose of entering into a "discount settlement" payable by credit card.By March 2007, the focus had shifted from ISP's to colleges and universities.The average settlement amount offered by the RIAA is around $3,000, but it depends on the number of infringements In one case in 2008, 18 UC Berkeley students were informed by the RIAA's lawfirm that they were infringing on copyrights through the use of Limewire.