Tesla and SpaceX CEO Elon Musk has urged social media users to get a blue checkmark on X, formerly Twitter, saying it is the only way to prevent major brand advertisers from demanding censorship on the platform. What Happened: On Thursday, the tech mogul responded to a user on X, who thanked him for his work and suggested that everyone should have a blue checkmark, saying it is “a small donation to free speech.” In response, Musk appreciated the user, stating, “subscribing is the only way to ensure that major brand advertisers cannot demand censorship of this platform.” See Also: Is Superintel…