Banksy has been unmasked. But just how valuable is anonymity in the art world?

By Lianne Kolirin, CNN (CNN) — The biggest mystery in the art world has apparently been solved: Banksy has been unmasked as a bespectacled middle-aged man from Bristol, England called Robin Gunningham. His name was revealed in a sprawling investigation by Reuters, though many say it has been an open secret for years, having been