The FT reports that
Retailers including discounters Target and Walmart, and department store groups Macy’s, Kohl’s and JC Penney have used Facebook pages to publish the “doorbuster” and “early bird” deals traditionally announced in newspaper advertising inserts on Thanksgiving, the day before “Black Friday” – so called because it was once the day on which retailers’ ledgers for the year moved out of the red and into the black.
