According to Wikipedia, the name, "Black Friday," originated in Philadelphia, where it originally was used to describe the heavy and disruptive pedestrian and vehicle traffic which would occur on the day after Thanksgiving. Use of the term started before 1961 and began to see broader use outside Philadelphia around 1975. Later an alternative explanation began to be offered: that "Black Friday" indicates the point at which retailers begin to turn a profit, or are "in the black".
I've always thought Black Friday was a peculiar phenomenon. When our local news channel showed people lining up outside Best Buy five days before the event, the anchor said, "I like a flat screen TV as well as the next person, but..." He didn't have to finish the sentence, at least, not for me.
So, did you participate in the Black Friday shopping? Do you have your Christmas shopping done? Have you even started?