Crowdstatus is made up of twitter crowds, each crowd contains people and each twitter person in the crowd has a status. This means that you can see what everyones current status is in a crowd.
The SNA Package, v1.2 This is a fully documented collection of R routines for social network analysis; utilities included range from hierarchical Bayesian modeling of informant accuracy to logistic network regression (with QAP and CUG tests). Quite a
T. Anderson, and J. Dron. Handbook of Research on Social Software and Developing Community Ontologies, page 1-17. Information Science Reference, (2009)