Shoe and Apparel E-Tailers. In the special report “Mousetrap: The Most-Visited Shoe and Apparel E-tailers” (Footwear News, Vol. 58, No. 3, p. 18), we found the following data on the average time, in minutes, spent per user per month from January to June of one year for a sample of 15 shoe and apparel retail websites. 13.3 9.0 11.1 9.1 8.4 15.6 8.1 8.3 13.0 17.1 16.3 13.5 8.0 15.1 5.8 Working with Large Data Sets