I feel like that is part of the problem with it. Not only can somebody post about you make things up about you. You also may never know. And it could end up silently impacting you. Say you apply for a job and a female HR person checking your job application decides to use this app to do a "background check" on some of the males applying. If she sees someone on their saying you sexually assaulted someone, she probably isn't going to choose to interview or hire you. And she probably won't even tell you why. And the claim against you could be totally bogus.

This is the scary reality of an app like this, especially if it continued to go more mainstream.