One of the tools used to increase transparency and participation is Open Government Data (OGD), which can be defined as government information proactively disclosed and made available online for everyone’s access, reuse and redistribution without restriction. The term OGD came into prominence relatively recently after the publication of a set of principles by a group of experts and advocates in Sebastopol, California, United States of America. Often referred to as the “8 Open Government Data Principles” or “Sebastopol Principles”, they set out best practice recommendations on how governments publish data on the Internet.