Popular buying/selling/auction site eBay recently released an infographic detailing the contrasts between those who have and haven't used the site. The information and the details are pretty surprising to read. According to eBay's blog, the site used what is referred to as "hunch" data to accumulate and form this graphic. According to Hunch.com, Hunch is a “Taste Graph” developed in a platform for taste-based applications. "Our self-serve API is free for non-commercial use" they say.