A few times over the years, I’ve taught seminars about social media. Facebook, I’d explain, is like a planned community. People view it as a safe neighborhood. Your page is your house, and your friend’s page is his house. There…

Throughout our history Americans have been wary of large corporate entities, from early opposition to British crown monopolies to the political animus targeting the robber barons in the late 19th century. Today, this concern has re-emerged, as the world’s tech…