Knowledge management method has developed as a strategic use of information technology. Many companies have developed knowledge management systems ( KMS) to manage their organizational education and business knowledge . The purpose of KMS is to enable knowledge workers to create the knowledge that is needed by the organization , to organize and to make the organization successful by keeping important business knowledge at hand. KMS includes processing , operation procedures , patterns , reference work , formulas , advanced practices , forecasting, etc. The main information technologies for this knowledge gathering are Internet , Intranet , Website , Wire , Data Mining , Knowledge Bases , Discussion Forums and Video Conferencing.