The shopping carts were full on many online retail sites for black Friday, affecting the performance of several big retailers web sites. According to CNet's and his Webware blog. "Every year, we see a handful of Web sites that aren't ready for the holiday rush. The problems are in the shopping cart experience, where you cannot complete a purchase," Shawn White, director of external operations for mobile and Internet testing firm Keynote Systems told Needleman. Friday's traffic reportedly affected HP, Sears, Kohl's and Saks while on the flip side Walmart, Costco, NewEgg, Best Buy, Dell, and Apple all performed well.