nudity, porn or sexually-suggestive content, gore, violence, or politics**, or any of a number of common PTSD/anxiety triggers (such as food, spiders, etc.), [mark it sensitive](#i-just-attached-a-picture-to-my-toot-whats-with-the-new-eye-icon).
* If the *text* of your toot contains any of those subjects, [use a content warning](#what-does-cw-mean).
* You don't need to use a URL shortener. Mastodon assumes that all URLs are exactly 20 characters long. Let people see what you're actually linking to.
* If you