Has it been confirmed that these are being used for ad targeting? Or is this just a frenzy of indignation based on speculation? [Update: OK, wow, yes I see, Tw

Has it been confirmed that these are being used for ad targeting? Or is this just a frenzy of indignation based on speculation? [Update: OK, wow, yes I see, Twitter themselves announced the tracking: https://support.twitter.com/articles/20172069 https://support.twitter.com/articles/20172069] There are legitimate uses for this information in an app, such as for when a user is given the chance to tweet about a high score from a game, for example, and the app URL for the game could be used to get them back into the game app after they finish in the Twitter app. I'm not saying this is the case (I don't know). It would be interesting to see whether all the apps in the list have some way that they interact with the Twitter app.