In the digitalization continuum of art and artefacts, the questions how and through which mediations artistic material ought to be presented are vital ones. This debate is here discussed with two such initiatives, namely the pan-Nordic museum portal DigitaltMuseum and the avant-garde repository UbuWeb. The initiatives are explained in an information scientific context, followed by a discussion of the repositories’ knowledge organization and user perspectives. Technological as well as juridical issues are thereafter brought up in order to illuminate the presentational differences between DigitaltMuseum and UbuWeb respectively. The arts council-funded DigitaltMuseum is viewed as a publication tool for Norwegian and Swedish museums to bring out various artefacts into the public web-sphere. UbuWeb is in turn defined as a rhizomatic guerilla-initiative for ensuring the digital prolonging for avant-garde material. The two repositories are in different ways concluded as significant platforms for the web-based display of digitized artistic objects and concepts.