My headline's referring to "slang for how students feel creeped out by school teachers and college professors who are using Facebook and MySpace to interact with their students online," the Dallas Morning News reports, adding that "the term derives from urban legends about sexual predators luring children into treehouses." Of course that's not fair to a lot of teachers who are in social-network sites to understand their students' real, outside-of-school lives. In any case, there are now student Facebook groups on both sides of the question: "Teachers … please stop going on Facebook," "Students should get over Teachers being on Facebook," and "No … it's not awkward being friends with my teachers on Facebook." Check out the article to see what some principals says, as well as some examples of "Creepy Treehouse." See also "Online student-teacher friendships can be tricky" at CNN.