Facebook is the world’s largest social network, reaching 1 billion active users at the beginning of October. People across the globe use Facebook to connect with old friends, share news about their lives and even to maximize their brand’s social reach. In its Statement of Rights and Responsibilities, Facebook lists a minimum age requirement of 13, which means that more and more students in high school and college are signing up for the social network. As a teacher, what should you do if a student sends you a friend request? Read the full story at Mashable.