A Forbes article from last year claims 33 million people participate annually in fantasy football. That’s more people than the populations of Kansas, Utah, Nevada, New Mexico, West Virginia, Nebraska, Idaho, Hawaii, Maine, New Hampshire, Rhode Island, Montana, Delaware, South Dakota, Alaska, North Dakota, Vermont, Wyoming, and Washington, DC combined. Now consider that most of fantasy football’s growth has happened in just the past 15 years thanks the to advent of online leagues.

To explain fantasy football, and fantasy sports in general, I invited SB Nation host and contributor Susannah Collins to What's Tech? Collins covers the NFL at Vox Media, and will be premiering a new show on the site later this year.