Do questions about the outlying suburbs count as on-topic? Is City Line Ave. the boundary, or can questions cover topics that include areas like Bala Cynwyd, Belmont Hills, etc.? If those are allowed, what about New Jersey right across the bridge?
How do we address questions that seem about Philadelphia, but answers may touch upon the outlying area (e.g. "Can I visit the Barnes Foundation's arboretum?" actually deals with the Merion campus, and not the Philadelphia campus)?