STARBUCKS TO ADD REWARDS TO ITS PREPAID CARDS.

In April, Starbucks Coffee Co. plans to give customers who use its prepaid card rewards for using the card, according to the Seattle-based company. Customers must register their cards at the Starbucks Web site to receive the benefits. Registered cardholders can receive complimentary flavor syrups and milk alternatives in their drinks, the company states in a news release. Starbucks representatives did not return calls requesting an interview by CardLine's deadline. Cardholders also can get a complimentary tall beverage when they buy a pound of whole-bean coffee, free refills of brewed coffee on the same visit, and two hours of free wireless Internet service in Starbucks stores …