Word about Black Friday spread after an advertisement was published in The American Philatelist in 1966.

According to a survey conducted on behalf of the coupon site RetailMeNot, 12% of all Black Friday shoppers admit they hit the stores while under the influence of alcohol.

Today, at least 20 other countries observe some kind of late-November launch to the holiday shopping season.

According to a National Retail Federation survey, 70% of Americans shopped in stores or online during Black Friday last year.

According to a study from WalletHub market research, books, movies and music have the best bargain prices on Black Friday, while furniture and jewelry are discounted the least.

A poll of 2,000 Americans found that the average American spends about $520 on Black Friday.

Black Friday has routinely been the busiest shopping day of the year in the United States since 2005.

In-store traffic actually peaks at 4pm on Black Friday, not early in the morning.

In Mexico, it is referred to as "El Buen Fin", which translates to "the good weekend".

Wisconsinites spend an average of $1,392.60 on Black Friday.