In this article, we are interested in information visualisations creation and sharing. Our approach is to consider information visualisation as a dataflow, issued from web services compositions which held both syntaxic and semantic rules. To ease service composition, we introduce mashviz, a visual programming interface aimed to both designers and users, to share and annote visualisations. We discuss our early created visualisations, and give clues about our next steps, such as evaluation by usage. CATEGORIES AND SUBJECT DESCRIPTORS: H.5.3 Information Interfaces and Presentation : Group and Organization Interfaces – Web-based interaction