Victoria's Secret to excess traffic during the black Friday

Black Friday a day of fun for the people of the United States. But what happens when almost 50 percent of workers shopping via online system?

Why honorable 2 annual event from ThankGiving and Black Friday, appeared to make some online sites to provide for extension of time.

Not intentionally extended, but several online sites to shop over the visitors.
Some web even become very slow start Black Friday event, even 2 sites Lowe's, Macy's and Victoria's Secret experiencing very heavy traffic.