What is Social Computing? When we mention social computing, what will be in our mind? Facebook, twitter, QQ. Obviously, these platforms are social computing platform for sure, since they are based on creating or recreating social conventions and social contexts. We could post our messages on Facebook, we could use twitter for showing our instant status, we also could use QQ to talking with our friend one by one or in a group. Thus, blogs, email, instant messages, social network services, wikis, social bookmarking and other instances of interacting social software are in the weaker sense of the social computing, which has to do with supporting any sort of social behavior in or through computational systems.
In the stronger sense of social computing, it has to do with supporting “computations” that are carried out by groups of people.Examples of social computing in this sense include collaborative filtering, online auctions, prediction markets, reputation systems, computation social choice, tagging, and verification games.
In conclusion, social computing can be defined that systems that support the gathering, representation, processing, use, and dissemination of information that is distributed across social collectivities such as teams, communities, organizations, and markets. Moreover, the information is not “anonymous” but is significant precisely because it is linked to people,who are in turn linked to other people.
 Social Computing, http://en.wikipedia.org/wiki/Social_computing. refered on 9/2/2013