Lightning Round: Twitter, Visa & More By: CNBC.com News May 19, 2014 at 18:49 PM EDT Are you ready skeedaddy???!!! It's time for the Lightning Round. Cramer makes the call on viewer favorites. Read More >> Related Stocks: ConocoPhillips Emerge Energy Services LP Hornbeck Offshore Services MasterCard Schlumberger Ltd Synovus Financial Corp Twitter, Inc. Visa