“Stop spreading lies about Iran on Facebook,” hissed the message written in Farsi and sent to Hamid, an Iranian-American graduate in California. We know where to find you, the anonymous writer warned: “Watch out, we will come after you.” Hamid was shocked: he thought the change he’d made to his Facebook photo – replacing it with a symbol of solidarity with the Iranian opposition – could be viewed only by people he’d “friended”. Read more » about Signing Online Increasingly Means Signing Away your Privacy