Just friends: Privacy in closed social network ?
Privacy law was largely created in the pre-Internet age, and new rules are needed to keep up with the ways people communicate today. Much of what occurs online, like blog posting, is intended to be an open declaration to the world, and law enforcement is within its rights to read and act on what is written. Other kinds of communication, particularly in a closed network, may come with an expectation of privacy. If government agents are joining social networks under false pretenses to spy without a court order, for example, that might be crossing a line.