900feet Inc is a Geocuration platform. Automatically subdivides geographic regions to efficiently scrape social media data. Provides location-awareness and insights for analytics beyond standard demographics.
The stack uses a backend of Ruby on Rails, Redis/Resque job queues, AWS s3 and dynamo datastores indexed locally on a postgresql database. The frontend uses Node.js, and d3/leaflet to display dynamic data on a denormalized Mongo database.
Data is harvested from as many social media services as can be found with location data. A small subset includes Twitter, Facebook, Yelp, Google+ and many more.