Add Patent Infringement to the List of P2P Sins? The Washington Post reports that "Patents Pressed Against File-Sharing Networks." From the article: "Attorneys for Altnet Inc. and its parent company, Sherman Oaks, Calif.-based Brilliant Digital Entertainment Inc., sent letters to several U.S.-based file-swapping firms -- including Lime Wire LLC, BearShare operator Free Peers Inc. and Mashboxx -- claiming that the companies were using patented technology in their products. The letter doesn't explicitly threaten a lawsuit but does invite the firms to 'discuss licensing opportunities.'"