Computational grids provide new natural examples of large-scale complex networks emerging from collective behavior. An interesting question is thus whether these networks exhibit properties similar to those of other social networks (SN), or original ones, which would be the specific signature of e-science. As a first step towards answering these questions, we build a scalable interactive visual exploration tool targeted at the spatiotemporal structure of data-access and data-sharing. The primary goal is to help computer science researchers getting intuition about the dynamics of the system.