United Supermarkets has gotten a Leader Award for Excellence in Digital Marketing by the Shopper Technology Institute at the 2012 LEAD Marketing Conference this week in Rosemont, Ill. The award was given to United for its marketing efforts, including the recent launch of a customized website and iPhone app for shoppers of its three banners: United Supermarkets, Market Street and Amigos. Additionally, United was recognized for enhancing its year-old Smart Rewards loyalty program for Market Street shoppers.