If you are on social media, and you are not learning, not laughing, not being inspired or not networking, then you are using it wrong.
Belief is a wonderful way to pass the time until the facts come in.
Freedom of Speech doesn't justify online bullying. Words have power, be careful how you use them.
Speak with caution. Even if someone forgives harsh words you've spoken, they may be too hurt to ever forget them. Don't leave a legacy of pain and regret of things you never should have said.
I disagree with the advice of 'write about what you know.' Write about what you need to know, in an effort to understand.