I am trying to build a case study for Insurance fraud detection using SNA. I have already looked around and build my model using Stanford's SNAP and other similar databases available on the internet for research. However, I am just wondering, what are the data sources from which I can get Social Network Data apart from the Facebook, Linkedin, Twitter connections. Can I get (buy) phone call records, or any other social network dataset? Also, do FB, linkedin sell their connections data?
Take a look at these links: