Not so long ago, a new batch of lenders got the idea that they could gauge a consumer’s credit risk from the data collected by Facebook. The social media company even patented a system for how to use data on an applicant’s Facebook friends to determine whether or not they were worth offering a loan to. And yet, so far, nothing seems to have come of these concepts. The Wall Street Journal reports that lenders who had once been keen on the concept of using Facebook data to evaluate borrowers have soured on the idea, thanks to regulatory restrictions, and...