Facebook Sale

Having read this http://www.bbc.co.uk/news/business-18105608 I personally cannot see that facebook is worth a $100 billion. So either Mark Zuckerberg is going to stay there as he truly believes in facebook or he is going to sell his 17% of shares and get out before it is too late. The problem being is the emphasis on the shift from traditional computer platforms to mobile devices, and unless Zuckerberg has some clever plan going forward I cannot see facebook succeeding once it is open to the interference of investors.