Editor Note: For more information about this release, please scroll to bottom. LONDON, January 7, 2015 /PRNewswire/ — Investor-Edge has initiated coverage on the following equities: Twitter Inc. (NYSE: TWTR), Baidu Inc. (NASDAQ: BIDU), Zillow Inc. (NASDAQ: Z), Angie’s List Inc. (NASDAQ: ANGI), and 21Vianet Group Inc. (NASDAQ: VNET). Free research on these five companies can…