Open Government Data (OGD) has become over the last ten years the central tenet of transparency policies in several States in the world. Presented as a great technological medium, it aims at strengthening trust in democracies and in the institutions of the State, allowing each citizento get access to data. Its staunchest supporters contend that Open Data has political and economic objectives at its core. For each citizen, OpenData allows, even encourages, public scrutiny over decisions made and actions taken by the state and its elected representatives. It also aims topromote public participation in the decision-making process through the (re)-use of public data. Such a dimension is central to strengthen social ties among the citizenry, and...