Marketing the 21st century library and information organization to its new age customers using Web 2.0 tools is a "hot topic". These proceedings focus on the marketing applications and (non-technical) aspects of Web 2.0 in library and information set ups. The papers included (in English and French) are exploring and discussing the following aspects: General concepts of Web 2.0 and marketing of library and information organizations; How libraries are adopting Web 2.0 marketing strategies; Marketing libraries to clients in using Web 2.0 tools; International trends; Interesting cases of marketing through Web 2.0 tools.