An anonymous reader writes "The Indian government has given the green light for the prosecution of '21 social networking sites.' The list features 10 foreign-based companies, and could affect websites provided by Facebook, Google, Microsoft, Yahoo, and YouTube. The recent development is part of an ongoing argument between the companies and India over whether content should be regulated (read: censored) in the country. The approval was actually made on December 23, 2011, but was only revealed today. India warned these websites it can block them just like China can."