Got a gay or straight hookup app installed? A banking app? A political app? A brokerage app? A cancer, HIV or diabetes app? (If you have all three of the latter, plus a brokerage app, your local PBS station will probably want to talk to you about a legacy donation right away.)
Twitter is now tracking the applications you've installed on your phone to target you for advertisers.
This is facebook-level creepy. HuffPost explains here what you have to do to opt out of this latest digital home invasion.