The Napster service [31] is a company based around connecting people who are offering MP3 files to people who want to download them. While they provide no real anonymity and disclaim all legal liability, an important thing to note about the Napster service is that it is highly successful. Thousands of people use Napster daily to exchange music; if there were greater security (and comparable ease of use), we suspect that many thousands more would participate. The existence of Napster shows that demand exists for a distributed storage and retrieval service.