Who started “Cinnamon challenge”?

Jason Kottke, on Open web, Dec 22, 2001. It reached 7 platforms in 21.4 years.

LineageEach dot, 1,000 YouTube challenge clips counted in the Pediatrics paperContestedKey steps, 10 of 15. Lines follow time and platform
Jason KottkeFirst postYouTube usersYouTubeBig Brother UKTVObserved peakPressPlatform jumpPlatform jumpBacklashBacklashAfterlifePatient zero