I've been meaning to put together a more technical blog post about the various geo pieces that we've released at foursquare. But for now, here's one that's an o

I've been meaning to put together a more technical blog post about the various geo pieces that we've released at foursquare. But for now, here's one that's an overview of the things we've been working on: http://engineering.foursquare.com/2013/06/11/quattroshapes-a-global-polygon-gazetteer-from-foursquare/ http://engineering.foursquare.com/2013/06/11/quattroshapes-a... The biggest piece is http://twofishes.net/ http://twofishes.net/, our coarse (city/neighborhood level) geocoder based on geonames data. It also serves as our coarse reverse geocoder when we combine it with polygon data, which we've released at http://quattroshapes.com/ http://quattroshapes.com/, as a combination of open government data and synthesized data. http://zetashapes.com/ http://zetashapes.com/ is a side project of ours, where we're seeing if people want to draw their own crowdsourced neighborhood boundaries in US by coloring in a map of basically city blocks. I'm always eager to chat about open geodata as well as complimentary commercial solutions.