This report discusses the benefits to Hill offices of improving their sites; describes the five building blocks of effective Hill Web sites; summarizes our research findings about what the primary users of Hill Web sites want to see on congressional sites; provides an overall assessment of how congressional Web sites are performing; identifies and describes the 35 best Web sites on Capitol Hill (our 15 Congress Online Gold Mouse winners and 20 Silver Mouse Winners); and lists common mistakes that impair the effectiveness of many congressional Web sites.