" Because of that, judgments of newsworthiness are often contagious; nothing obscures the fact that a decision is being made quite like everyone else making it, too. Thus, a shortcut to newsworthiness has always been whether other news organizations are covering a story — if they are, then it’s newsworthy by definition. In the modern era, a shortcut to newsworthiness is social media virality; if people are already talking about a story or a tweet, that makes it newsworthy almost by definition. In both cases, the presence of other outlets and other voices serves to build a fortress of tautology: whatever everyone is covering is newsworthy because everyone is covering it. "

― Ezra Klein