The same plan to devalue pages in the Facebook News Feed that sent musicians and music marketers scrambling did the same for investors Friday. Facebook stock fell 4.47%, closing down $8.40 at $179.37. For founder Mark Zuckerberg, that translates to a $4 billion loss in his net worth.
But don't feel to bad for Zuckerberg, He's still worth about $74 billion.
Musicians and music marketers who spent countless hours building an now devalued following on Facebook are not so lucky.