During this past year I've joined numerous social networks for international educators, researchers, graduate students and bloggers such as Linkedin, Knowledge Communities of NAFSA, ResearchGATE, Graduate Junction, Scribd, Facebook, and VerveEarth . The development and growth of these networks and how people use them to connect is quite interesting.
In addition to the networks listed above that I joined I wanted to highlight another that I think leads all others and is for researchers at institutions of higher education world wide. Academia.edu is a very well developed and functional network that provides academics the opportunity to easily make connections as well as create personal websites where you can upload your CV, papers and highlight various talks you've given. Here is a link to my academia.edu webpage: http://chicago.academia.edu/DavidComp