(FILES) This file photograph taken on March 23, 2022, shows logo of the networking application TikToK displayed on a tablet in Lille, northern France.  - TikTok on Monday said it will start letting some popular accounts at the video-snippet streaming star charge subscriptions for live streams. 
Similar money-making tools have been added to rivals such as Instagram and Facebook as the social media platforms compete for online personalities that attract audiences.  (Photo by DENIS CHARLET  /  AFP)
(FILES) This file photograph taken on March 23, 2022, shows logo of the networking application TikToK displayed on a tablet in Lille, northern France. - TikTok on Monday said it will start letting soShow more

What is the 'human feelings' test that's going viral on TikTok?