NeighborFavor Inc. is expanding again. This time, it's bringing its app-based Favor retail delivery service to new markets in Texas. The latest additions are focused on the Dallas-Fort Worth region, with the company set to launch its service in Arlington, Frisco and McKinney on Dec. 2. The company will operate in 18 cities including the newest locations. The Austin company, founded in 2013, has been on an expansion tear over the past year.