If you are over 30, then TikTok is not for you

TikTok started out as a lip-syncing app, but has developed into a broad video platform for teenagers who want to share what they're up to. — dpa

In the past, kids used to dance in front of the mirror in their bedroom, singing their favourite songs with a hairbrush in their hands. Today they're dancing in front of a smartphone camera and the whole world is watching.

The forum for their performances is, increasingly, the wildly popular short-video app TikTok.