Dixon,
What are you shouting about? If shouting in the middle of the night at a computer will make you feel better, go for it? Scream your lungs out. As long as you are not disturbing anyone, feel better and shout.
If you are shouting at someone else, you must be careful not to hurt the other person. I know when I shout at people, for example my significant other, they get very upset with me. I don't care if someone yells at me as long as it is not in front of other people and they do not use curse words. I do not want to be demeaned. Most times when someone is shouting they are venting and I understand that, however don't make me feel bad.
As long as you are not hurting anyone or disturbing anyone, Yell to you feel better!!