Essay on how our 'sense of place' in relation to disaster events is evolving. The essay looks especially at how the stream of posts on Twitter evolved as the triple disaster in Japan developed after the March 2011 earthquake.
Interesting article about analyzing tweets for disaster assessment.
Visualisation to show the distribution of tweets in Africa.
Article on how the American Red Cross responded positively to a social media faux pas.
Resutls of a survey on the use of microblogging by different segements of the population in the U.S.