Nordstrom recently announced adjustments to its loyalty program; frequent shoppers are eligible for perks like custom shopping parties, in-store fashion shows and as much as $100 in complimentary alterations.Barnes & Noble unveiled temporary price cuts to its Nook tablets and e-readers for shoppers who buy either People magazine or New York Times Nook subscriptions. And Safeway, Kroger and Stop & Shop are hoping to offset rising food prices by providing gasoline discounts to their rewards members and personalized savings for loyal shoppers.