There have been people interested in spread misinformation. But until WhatsApp, YouTube, and Facebook, which rely on and encourage oversharing, they didn't have

There have been people interested in spread misinformation. But until WhatsApp, YouTube, and Facebook, which rely on and encourage oversharing, they didn't have the means to do it cheaply. They had do it the old-fashioned way by reaching people via publications or organizations. It used to take decades to build a misinformation campaign, now it takes weeks or months.