Des modèles économiques encore à inventer

Abundant, volatile, contingent – the Web sometimes provides a false sense of visibility for researchers. Use of the Web forces information professionals to come to terms with the issue of long-term access and even the very concept of collections building. Because libraries now face competition from the commercial sector with regard to information preservation, F. Cavalier reflects here on the missions and place of large institutional libraries.This last section concludes with several articles: “The professional approach that journalists take is what gives value to a publication or its website”. “Open access: opening up to publishers?” and “Centralization in the professional information sector.