<P><STRONG>On Line Citizenship </STRONG>discusses the evolutionary trends of cities in terms of e-government in the present and future technological scenario. The focus is on the transformation of the relationships between city administrations and citizens due to Information and Communication Technology. On a broad perspective, the book intends to present opportunities and threats in the development of on line citizenship in the framework of the European Union. <STRONG>On Line Citizenship </STRONG>gathers original contributions and documents presented at the International Conference On Line Citizenship - Emerging Technologies for European Cities promoted by Telecities-Eurocities and the City of Venice in co-operation with Venice International University and sponsored by SUN Microsystems, held in Venice, May 30-31, 2003. The work is complemented by multimedia presentations and speeches from the conference, available at <STRONG>http://it.sun.com/eventi/online_citizenship</STRONG> (reserved area).</P>