Shares of Netflix fell sharply Tuesday after it reported lower-than-expected Q2 earnings, which the company blamed on subscriber growth that fell short of forecasts. Netflix added 1.7 million subscribers in the quarter, pushing its total membership to more than 83 million, the company told shareholders. However, that growth was far less than the 2.5 million it had projected. "We are growing, but not as fast as we would like or have been," reads the letter. "Disrupting a big market can be bumpy, but the opportunity ahead is as big as ever."