RADII - Aug 30 - Momo's new face swap app Zao is the hottest thing on the Chinese internet right now. But the app is also raising a host of privacy concerns on Chinese social media. Users take a selfie and put themselves into their favorite movie or soap opera. Zao user agreement states that the app gives Momo global rights to use any imagery created on the app for free. Once a user has opted in, there doesn't seem to be the right to revoke the agreement.