Things I learned from my time on Discord:

• Servers with huge marketings will probably become very bland(?) and uninteresting.
• A good/ideal server would be a semi-private one, that was made for a purpose, have no or very little marketing and people have to put enough effort to search for it in order to get in.
• It is best to not try to argue.
• See if a server fits you. If not, don't stay for too long.
• Try to not reveal any of your personal information.
• Discord is a social media.
• Keep a cool head.
• Nói văn minh trên mạng kém thì chắc đúng rồi đấy.
• Nobody really knows you anyway.

I had left all servers that serves me no purpose. That means, I will be staying at some public servers that is somewhat special for me:

• Doujin Cafe: Joined after learning about it in a conversation on IRC. Specializes in Doujin music. Also talks about programming, games, Japanese stuff, etc. Very interesting community and people (they have very good tastes on things!).
• Vietnam Key FanClub: A certain former staff recommended this server to me. Specializes in visual novels from a company. Very mature members. People have very diverse viewpoints on things. No free speech.

This is it!