Digital advertising may spark media M&A in 2015 By: CNBC.com News January 01, 2015 at 11:00 AM EST There may be a yet another reason for media content companies to merge in 2015: digital advertising. Read More >> Related Stocks: AT&T Inc Atlantic Power Corp CBS Corp Comcast Corp Comcast Corp DIRECTV Discovery Comm B Discovery Communications Google, Inc. Nielsen NV Scripps Networks Interactive Time Warner Time Warner Cable Twenty-First Century Fox Via Renewables Inc Cl A Viacom Walt Disney Yahoo