The policies of social media platforms, i.e. the documents which define the principles of use for the platform, are often overlooked due to their prevalence, length, and complex legal terminology. When confronted with yet another Terms of Service, many users simply click “accept” and never consider the policy documents again. This project moves beyond the seeming mundanity of the documents to explore the values embedded and expressed in the policies, comparing four major global social media platforms: Facebook, Instagram, YouTube, and Twitter. With this, we also want to uncover the platform’s cheshire cats that promise a lot with their big smiles, but can disappear in an instant.