(this page is part of my Open Data, Open Society report. Please follow that link to reach the introduction and Table of Content, but don’t forget to check the notes to readers!)
PSI (Public Sector Information) regarding local economics activities refers to all data about local businesses: their number, location, activity sector, contact info, opening hours and possibly tax and other financial or labor-related information like numbers of employees. The simplest applications of these data, which are also the ones that are most immediately useful to the greatest number of citizens, are mashups that display all of them in one view, normally on a digital map, so that users can find location and information of the closest business and public services in each category.