Remember these are Twitter users, not the world. There is a trend in thinking that Twitter, Facebook and other social users are representing the world populati

Remember these are Twitter users, not the world. There is a trend in thinking that Twitter, Facebook and other social users are representing the world population. Hedonometer gives some explanations here: http://hedonometer.org/about.html http://hedonometer.org/about.html "Tweets represent a non-uniform subsampling of all utterances made by a non-representative subpopulation of all people. However, there are hundreds of millions of people presently using the website to express their activities and interests, and as such it is an important social signal."