Places Overview
"100 million commercial points-of-interest (POI) worldwide and is rich with real-world information" some good open source data, but a lot of the actually interesting attributes (hours, tips, descriptions) are only available for $$$
Library Field – Syllabus
Shannon Mattern: "What if we imagined that Field as a Library: a public space, a social infrastructure, an intellectual and ecological commons, a site for the convergence of myriad ways of knowing?"