TikTok users are surprised to find themselves in ads for the app

Elijah Jay is wants nternet stardom, almost anywhere he can get it, just not as a TikTok salesman. But that’s exactly what he became when the social media company used one of his videos in an ad that ran on Snapchat.Jay's video, in which he performs a balloon-swallowing stunt, has been seen by hundreds of thousands of viewers on TikTok, the Chinese social video platform. He just never signed up to do it as part of TikTok’s advertising. In August, Jay says he started receiving message