Visits to the top 500 retail sites increased 13% on Black Friday, according to data from Experian Hitwise. For the sixth year in a row, Amazon was the top retail site receiving traffic on Black Friday. Walmart was the second most visited retail site, followed by Target. But Target’s visits increased 13% on versus 2009, representing the biggest increase among the top five sites. The top 20 retail sites accounted for 61% of all visits among the top 500 retail sites.