Hashtag challenge

The format was built on TikTok and now runs across every short-form feed. Someone posts a simple action set to a specific track, tags it, and the tag becomes the container everyone else's attempt drops into. Organic challenges emerge on their own. Branded ones are bought by an advertiser and seeded with paid creators. For a creator joining in, the shared audio and tag pull in viewers already watching that trend, at the cost of a video that ages badly within weeks. Late entries land nowhere.