Make yourself look good online

1. Take advantage of your anonymity

Communication online leaves an opportunity to be anonymous and you should take an advantage of it. People are tired of watching themselves behaving according to society standards. Going online makes it easier to live your life and share the exact thoughts and experience that close to your heart. No matter what color of skin, gender, appearance you have, nobody judges it when it comes to a username. 

Your personality, however, does matter as well as style of writing. People who have decided to spend essential part of their life in net tend to be delicate about information they deal with. 

Nowadays it's much easier to track anyone unless all necessary protective measures has been takes. Make sure you to use dynamic IP as well as encrypted connection if you expose some private information you don't want to be spread.

On my experience there were many naive girls in my school who strongly believed it's safe to send private photos if they were shoot below neck with blurry background. Unfortunately, some envious boys haven't considered it as an obstacle and as a result those photos were exposed and went viral within our school. The good advice would be not sharing such information anywhere but if you cannot fight a desire to word out something sensitive then at least think in advance and apply all possible measures to prevent tracking.

Know what you're talking about and make sense

Pay attention to the information you deliver. Before making a statement it's always useful to check facts and go through previously left comments in the same space to avoid repetition. In real conversation we can get away with throwing made up facts using random numbers with a reference to "some article I read a while ago". In the internet users have unlimited time to check provided information. A person can be bullied for spreading fake news, non-existing facts etc. I remember a lot of people I considered as approved source of knowledge at the time when we didn't have access to wikipedia. When it came up to conversation in messenger they happened to be really careful and not really active in open discussions. Frankly saying I miss those times when we had intense and overemotional debates without understanding what's going on. Now it feels like any arguing with people ends up on scrolling google search results which is not what I expect from a conversation.

Don't post flame-bait

Be polite and respect public opinion. It's important to hold internet safe space and contribution chaotic behavior will result an unfriendly environment with no possibility to have a normal connection with others.
I'm not saying we should support censorship. It's rather the worst thing could possibly happen. However, you always have to look around and follow local traditions, style of communication to be a part of community, not a person who destroys it.