A critique of the #Economist's “#AfricaTweets” story | Zero Geography
http://www.zerogeography.net/2012/02/critique-of-africatweets-in-economist.html
Looking at the source document for the Economist’s data (something they neglect to link to), we see that the data naturally contain only geo-located Tweets (something they neglect to mention). This is important because only a very small proportion of tweets tend to contain any geodata. In June 2011, my team and I collected 19.6 billion tweets using the statuses/sample stream
http://1.bp.blogspot.com/-O67je_tiDMQ/TzBDUZWcQ9I/AAAAAAAANow/9rgJKmZa3Ws/s1600/How-Africa-Tweets.jpg
#twitter #afrique #data