Trying how-old.net, a site built out by Microsoft to help highlight their Azure and Cortana offerings, based on an announcement  at Strata.  My Facebook profile picture got hits ranging from 20 – 52. More 20ish (yay!) and some joker put in 99… Interesting machine learning and data science experiment. (The machine got it precisely right in terms of my actual age, though I think the picture is two or so years old, so judge “right” appropriately.)