Despite impressive profits and continued growth in advertising revenue, both FB and GOOG have underperformed their peers in the past 5 years, returning less 165% and 208% despite sitting on mountains of cash. MSFT, AAPL, NFLX, and AMZN have each risen at least 385% in the same 5 year period, more than tripling the performance of FB. Though FB and GOOG are often...