Foursquare is putting your check-in data to use through its new partnership with Gnip, a service that aggregates social media APIs. Gnip has similar deals with companies like Tumblr and Disqus, and it plans to provide Foursquare-sourced information to market and academic researchers. Blake Shaw, Foursquare's resident data scientist told Gnip, "I think this data can act almost like a microscope for cities." It's worth noting that this isn't the first time Foursquare's set out to share check-in data. A few months ago, the company took some flack for its
