Microsoft Corp. Chairman and Chief Software Architect Bill Gates gives his keynote address at the RSA Conference 2004 on information security in San Francisco, February 24, 2004. Gates announced a detailed vision and proposals on how technology can be used to help put an end to spam, including outlining the company's Coordinated Spam Reduction Initiative (CSRI) and technical specifications for the establishment of Caller ID for E-Mail. REUTERS/Lou Dematteis LD