En attendant la réponse à SA question, William Safire identifie le premier columnist (chroniqueur) de l'histoire. Je le cite dans le texte :
His name is Simeon Stylites the Elder. According to the OED, a stylite was "an ascetic who lived on the top of a pillar". (Greek "stylos" means "pillar".)The sainted Simeon the Elder took up residence atop a column in Syria in AD 423. He remained atop that column and others for 37 years, each loftier and narrower than the preceding; his final column was 66 feet high.
Simeon the Elder stood day and night, leaning on a rail, dependent for food on what his disciples (and presumably the Younger) brought him by ladder. He preached sermons to those gathered around his column, who then went out and spread his pastoral teachings. Other columnists took up his technique and were also called stylites. He was the subject of a poem by Tennyson, concluding with "I, Simeon, The watcher on the column till the end."
That was the first columnist. Now it's up to you guys: who was the first blogger?