Internet users have become providers of information through social networks like Facebook, Twitter, Flickr, and so forth. In this context Semantic Computing plays a chief role because of its potentiality to turn shapeless crowds information into social and digestible knowledge. The workshop, that will take place on September 19, 2013, in conjunction with the 7th IEEE International Conference on Semantic Computing (ICSC2013), (http://ieee-icsc.org/icsc2013/) is a forum for researchers, industry practitioners and domain experts in the field of semantic computing to exchange the latest advances in the state of the art and practice of semantic computing applications to the social network context.