The internet is just like the real world – nice people use the internet, but some nasty people do too.
It’s important that you are nice and kind when you use the computer to talk to people. Even if you can’t see someone, things you write might still upset them.
If anyone is nasty to you or makes you unhappy – you must tell a grown up so that they can help you and make the person stop.
Watch a cartoon about being nice to each other here