I've seen other streamers use memes, GIFs, or videos from the internet on their Twitch streams. What precautions should I take when using third-party content?

Third-party content refers to any material or creative work that is produced by someone other than yourself or the platform you are using. It's important to know about possible legal issues and respect the rights of other creators when you add memes, GIFs, or videos from the internet to your Twitch streams.

First, assume that all online content is copyrighted unless it says otherwise. Just because something is public doesn't mean that you can use it commercially on your stream. Check the content's licensing or usage rights, and know the rules for fair use, though keep in mind that they can be applied in different situations.
It is safest to get permission from people who own the rights to content before using it. Many creators like it when you ask for permission, which keeps you out of trouble with the law. It is important to write down permissions so that you have a record in case there are questions or disagreements.
It is important to know that Twitch takes copyright violations very seriously. They respond to takedown requests or DMCA notifications that are sent to them under the Digital Millennium Copyright Act and other similar laws around the world.

If you break the rules more than once, your account could be closed. You can add third-party content to your streams in a responsible way if you are careful and aware of copyright issues.

If you have additional information or insights, don't hesitate to share in the comments.