The last time I heard about them was when they increased the points you get for asking questions, because they found that women had fewer points than men on average, and wanted to give women more points, and found that women were more likely to ask questions than answer them. It was kind of a perfect story, actually: Women sucking at tech despite complete gender anonymity, and the typical silicon valley response of rigging the game so that women do better for no reason other than that they're women and they're the preferred gender.