Who started “Chuck Norris facts”?

Ian Spector and Mike Lelli, on Open web, May 1, 2005. It reached 5 platforms in 6.6 years.

LineageContestedKey steps, 11 of 16. Lines follow time and platform
Ian SpectorBefore the first postIan Spector and Mike LelliFirst postPlatform jumpMilestonePlatform jumpPlatform jumpCommercialBacklashOwner responseCommercialAfterlifePatient zero