CoStar forced a smaller competitor to give over names of four of its users that CoStar suspects leaked some of its own data to Compstak. N.Y. Stock Exchange executives talked to REIT.com about the state of the REIT IPO pipeline. Seeking Alpha looked at the role of real estate in an activist shareholder fight at Darden Restaurants. Gap will test online ordering within its stores. And Nation’s Restaurant News provided a look at the biggest fast-casual pizza chains. These are all among today’s must reads from around the commercial real estate industry.