FlowingData: Mapping Twitter demographics

Interesting alert of MapBox by poster Yau: http://flowingdata.com/2013/06/20/mapping-twitter-demographics/   I just ordered the e-book version of Yau’s Data Points.

Here is MapBox: http://www.mapbox.com/blog/visualizing-3-billion-tweets/

Later today I found this related article in GigaOm by Ingram: