"Once you enter digital media - whether through email, social networking, blogging, or playing a game - you simply don't know how wide a community you're part of, you can't control that.... This is unprecedented in human history," Howard Gardner told Education Week in this video. He went on to explain that, in the past, we all "evolved to deal with groups of 50 or 100 people whom we knew, they … [Read more...] about Learning how to navigate virtual communities: Key to digital citizenship