Black Friday creeps into Thanksgiving permanently?

This season could mark the end of Black Friday as we know it.

For decades, stores have opened their doors in the wee hours on the day after Thanksgiving. But this year, major chains such as Target and Sears ushered customers in on Thanksgiving itself, even before the turkey leftovers had gotten cold, turning the traditional busiest shopping day of the year into a two-day affair.

AP Photo/The Morning News, Richard Burkhart

A shopper holds boxes of boots above her head as she makes her way through a crowd during Black Friday shopping at a Belk store in Oglethorpe Mall in Savannah, Ga. on Friday....