The Web is at a turning point with the emergence of the Open Web Platform, the set of technologies used to create highly interactive experiences and social apps on a broad range of devices. W3C has helped foster the deployment of Web technology on mobile devices and, for the past two years, has made the convergence of Web and TV a priority (see the Web and TV Interest Group). We now see an opportunity to extend the Web to a new class of devices: very large digital displays. We invite operators of consumer electronics companies, digital signage platforms, advertisers, browser vendors, sign owners, and others to participate in this discussion.

For many years, W3C has been a keen promoter of Open Data, fostering a culture in which public administrations make their data available, ideally in machine-processable formats. Many governments have embraced the idea with enthusiasm, setting up national data portals. As part of the FP7-funded Crossover Project, W3C and the European Commission are running a Workshop in June, just ahead of the Digital Agenda Summit, to ask a simple question: what is all the 'new' government open data being used for?