Facebook has made a big point over the years of having real identities for its users, but it looks like that requirement is soon going to disappear, and users will able to use made-up names for more anonymity. Call it the Snapchat effect. According to a profile of Mark Zuckerberg published on Thursday in BusinessWeek — to mark the Facebook’s 10th anniversary — the social network plans to let users log in anonymously in a set of new apps it is planning to release (for more on that app strategy, check out Josh’s insightful look here). Paper, a new Facebook reading app out on Thursday, does require Facebook login, but that looks like it may now become the exception rather than the rule. Zuckerberg once described the idea of having two identities as showing a “lack of integrity,” but he now says that real identity can be a millstone.