I went out to Wikipedia to find out more about this phenomenon. I don't feel so stupid, now. The term was coined only two years ago. Wiki says:
The term Cyber Monday refers to the Monday immediately following Black Friday, the ceremonial kick-off of the holiday online shopping season in the United States between Thanksgiving Day and Christmas. Whereas Black Friday is associated with traditional brick-and-mortar stores, "Cyber Monday" symbolizes a busy day for online retailers. The premise was that consumers would return to their offices after the Black Friday weekend, making purchases online that they were not able to make in stores. Although that idea has not survived the test of time, Cyber Monday has evolved into a significant marketing event...Business Week notes that Cyber Monday is just the 12th-biggest online shopping day of the year. (That still sounds pretty good.) And Information Week says about 72% of online retailers planned Cyber Monday promotions. With all that exciting news, I dashed over to my Etsy site to see if I had been swamped with sales.
And yes, I know I didn't post a profile of this week's Etsy artist yet. I'm working on it, I swear!