Keith Bliss, senior vice president and director of sales & marketing at Cuttone & Co., Inc., previews Twitter Inc.'s (NYSE: TWTR) quarterly earnings. The company's results will be released after U.S. markets close on Tuesday, and Twitter is scheduled to host a conference call with shareholders at 5:00 p.m. Eastern to discuss the social media giant's fiscal first-quarter 2014 results. Analysts expect a loss of three cents per share on revenue of $241 million.