Do a Web search for stories about Napster and its legal battles at https://www.altavista.com. Why has the Recording Industry Association of America (RIAA) filed its lawsuit?
How is this different from making a VHS copy of a movie or TV show with your VCR?
What legitimate uses of Napster's file sharing abilities can you come up with?
What other Web-based sites offer file sharing similar to Napster?