Do you make maps? Do you use software like ArcGIS, QGIS, TileMill or GRASS? Do you use sites like GeoCommons, OpenStreetMap or Google Maps? Love technologies like PostGIS or GeoJSON? Do you create location-based web sites and/or mobile apps? Do you GPS your hikes, runs or bike rides and want to see where you went? I started this group because I couldn't find any GIS-centric meetup groups in the New York area (active ones, at least) and am eager to meet other GISers to learn and share knowledge a …