M. S. Bernstein, A. Marcus, D. R. Karger, and R. C. Miller, Enhancing directed content sharing on the web, Proceedings of the 28th international conference on Human factors in computing systems, CHI '10, pp.971-980, 2010.
DOI : 10.1145/1753326.1753470

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.210.4919

J. Chen, R. Nairn, L. Nelson, M. Bernstein, C. et al., Short and tweet, Proceedings of the 28th international conference on Human factors in computing systems, CHI '10, pp.1185-1194, 2010.
DOI : 10.1145/1753326.1753503

N. Ellison, C. Steinfield, and C. Lampe, The Benefits of Facebook ???Friends:??? Social Capital and College Students??? Use of Online Social Network Sites, Journal of Computer-Mediated Communication, vol.22, issue.3, pp.1143-1168, 2007.
DOI : 10.1145/358916.361990

S. Erdelez and K. Rioux, Sharing tools on newspaper Web sites: an exploratory study, Online Information Review, vol.24, issue.3, pp.218-228, 2000.
DOI : 10.1111/j.1559-1816.1999.tb00141.x

M. Gupte, M. T. Hajiaghayi, L. Han, L. Iftode, P. Shankar et al., News Posting by Strategic Users in a Social Network, Proc. WINE'09, pp.632-639, 2009.
DOI : 10.1007/978-3-642-10841-9_65

A. Gürsel and S. Sen, Producing Timely Recommendations from Social Networks through Targeted Search, Proc. AAMAS'09, pp.805-812, 2009.

I. Guy, N. Zwerdling, D. Carmel, I. Ronen, E. Uziel et al., Personalized recommendation of social software items based on social relations, Proceedings of the third ACM conference on Recommender systems, RecSys '09, pp.53-60, 2009.
DOI : 10.1145/1639714.1639725

H. Hopkins, Twitter and News and Media Websites, Hitwise Intelligence, 2010.

A. Java, X. Song, T. Finin, and B. Tseng, Why we twitter, Proceedings of the 9th WebKDD and 1st SNA-KDD 2007 workshop on Web mining and social network analysis , WebKDD/SNA-KDD '07, pp.56-65, 2007.
DOI : 10.1145/1348549.1348556

S. Kalogeraki, The Divergence Hypothesis in Modernization Theory Across Three European Countries: the UK, Sweden and Greece, Culture Unbound: Journal of Current Cultural Research, vol.1, issue.1, pp.161-178, 2009.
DOI : 10.3384/cu.2000.1525.09110161

M. Kirkpatrick, Facebook Could Become World's Leading News Reader (Sorry Google, ReadWriteWeb, 2010.

K. Lerman and A. Galstyan, Analysis of social voting patterns on digg, Proceedings of the first workshop on Online social networks, WOSP '08, pp.7-12, 2008.
DOI : 10.1145/1397735.1397738

K. Lerman and R. Ghosh, Information Contagion: An Empirical Study of The Spread of News on Digg and Twitter Social Networks, Proc. ICWSM, p.10, 2010.

J. Liu, P. Dolan, and E. R. Pedersen, Personalized news recommendation based on click behavior, Proceedings of the 15th international conference on Intelligent user interfaces, IUI '10, pp.31-40, 2010.
DOI : 10.1145/1719970.1719976

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.308.3087

F. K. Liu and H. J. Lee, Use of social network information to enhance collaborative filtering performance, Expert Systems with Applications, vol.37, issue.7, pp.4772-4778, 2010.
DOI : 10.1016/j.eswa.2009.12.061

O. 'donovan, J. Smyth, and B. , Trust in Recommender Systems, Proc. IUI'05, 167?174, 2005.

O. Phelan, K. Mccarthy, and B. Smyth, Using twitter to recommend real-time topical news, Proceedings of the third ACM conference on Recommender systems, RecSys '09, pp.385-388, 2009.
DOI : 10.1145/1639714.1639794

URL : http://researchrepository.ucd.ie/bitstream/10197/1893/1/sp145-phelan.pdf

K. Purcell, L. Rainie, A. Mitchell, T. Rosenstiel, and K. Olmstead, Understanding the Participatory News Consumer, Pew Internet & American Life Project, 2010.