NYU officials released a statement on the university's own Facebook page, informing the community that the group is not NYU-affiliated, and that the school encourages "all parties to contribute thoughtfully and respectfully to the discourse on race and to reject efforts to derail or distort the conversation."But NYU, where white students make up the largest ethnic or racial group, at about 39 percent, is just one of more than 30 schools to see such sites emerge in the past few weeks. And one of the questions most often asked is, simply, if they're real - and whether the answer matters.According...