I mean, when Facebook came out with a similar admission last year, Twitter should have at least checked that they weren't doing a similar thing. But I guess tha

I mean, when Facebook came out with a similar admission last year, Twitter should have at least checked that they weren't doing a similar thing. But I guess that would have made them culpable had they discovered the same issue. So, just wait out till some employee "accidentally" discovers it! Twitter would go head over heels trying to remove that one field from their sign up flow to improve the funnel. In fact they will copy what their competitors are doing to understand things better. But when it comes to security or using data, anything goes unless they absolutely have to address it for legal/compliance reasons. Just the state of affairs of tech companies these days.