A nondisparagement clause generally prevents an employee from saying anything negative about the company, even on social media. Nondisparagement clauses have gained popularity in the startup world where they are often used to hide the sexist culture in the tech industry. If you are subject to a nondisparagement clause, it is best not to publicly discuss your employer, and especially not online, where proof of your comments could be saved as evidence of a violation. Consult with an attorney to review the agreement before speaking out, even anonymously.