As promised, here is the link to the article by journalist Joanna Slater in The Globe and Mail March 15, 2017. Some followers set up an app on their phone to be notified when Donald Trump tweets; others make him one of their prioritized feeds on Facebook.
http://www.theglobeandmail.com/news/world/us-politics/what-is-trump-up-to-ontwitter/article34302229/