Online, you can project whatever identity you like. But for some people, it's easier to have no identity at all.

A new social networking site, Social Number, caters to those who have a preference for anonymity. Instead of a name or a handle or a thumbnail photo of themselves, users are identified only by a number. In this way, the site encourages users to discuss anything, from a bad job to a hot-button social issue to a substance-abuse problem, without fear that the conversation could be connected to their real-world identity.

Read more in CNN.