This paper critically examines the language drawn on to describe socially responsible activities (CSR) in the context of the corporate web page. I argue that constructions of CSR are made plausible and legitimised according to the context of the expression. The web site is a genre of communication which addresses a broad and discerning audience; hence fractures in the institutionalised nature of argument may be apparent. The focus of this paper is to examine how the rhetoric of CSR is legitimised (...) and to develop a framework of argumentation repertoires that operate in this context. (shrink)