Why do you think it is important to have good manners online?
It is important to have good manners online because you never know who is watching or reading what you do. For example if you were applying for a college, and the dean looked at your profile online, and you had all profanity up there it wouldn't be a good look. Now do you think you would get accepted to that college? Always have manners online not only for yourself but for others to.