Proceedings Joint Conference, 8th IEEE International Conference on E-Commerce and Technology (CEC 2006) : 3rd IEEE International Conference on Enterprise Computing, E-Commerce and E-Services (EEE 2006) : 3rd IEEE International Workshop on Mobile Commerce and Wireless Services (WMCS 2006) : Joint Workshop : 2nd International Workshop on Business Service Networks (BSN 2006) : 2nd International Workshop on Service Oriented Solutions for Cooperative Organizations (SoS4CO) : June 26-29, 2006, San Francisco, California / [sponsored by the IEEE Computer Society Technical Committee on Electronic Commerce ; with support of IBM Research ... [et al.].