New York City -- Macy’s took the top spot in the annual Digital IQ Index, which ranks retailers according to their online competence. The index measured the digital footprint of 64 brands via 350 data points across four dimensions: Site, Digital Marketing, Social Media, and Mobile. Based on these scores, each brand was assigned a Digital IQ and a corresponding class of Genius, Gifted, Average, Challenged, or Feeble.