Green Monday is a marketing term originally coined by eBay referring to the second Monday in December. Despite following sales-heavy days such as Black Friday and Cyber Monday, many retailers on Green Monday see a sharp increase in online traffic. Walmart in 2011 had its highest online traffic day in December on Green Monday, a company spokesperson told PCWorld. Online metrics firm comScore said Green Monday for 2011 was the third biggest spending day of the holiday season.
Online retailers have also coined a phrase for December 17 which is called Free Shipping Day, the last day that many retailers can guarantee shipping in time for Christmas. Between December 14 and 17, some more electronics deals are expected.