ANN ARBOR, Mich. — Walmart has put a considerable amount of time an effort into its digital business, and that appears to have been well worth it as the company achieved an 82, from a prior-year score of 79, on ForeSee's 2012 rating of Internet retailers. Achieving an 82 is impressive, as a score of 80 is the minimim needed to be considered "superior." The survey scored all retailers on the list out of a 100.