Recent Trends and Developments in Social Software International Conferences on Social Software, BlogTalk 2008, Cork, Ireland, March 3-4, 2008, and BlogTalk 2009, Jeju Island, South Korea, September 15-16, 2009. Revised Selected Papers - Breslin, John G.; Burg, Thomas N.; Kim, Hong-Gee; Raftery, Tom; Schmidt, Jan-Hinrik (Springer Berlin Heidelberg, 2010)