The way you can leave a comment is either by clicking on the on the button that allows you to leave comments. Or you just realize it’s 2016 and if you don’t know how to comment on anything then your pretty behind and you should really just look it up. When you leave a comment, comment on how you feel about the subject or your opinion. But don’t be to harsh, you could hurt someones feelings. Unless the person who made the content is a terrible person then sure, leave some hate. The types of comments I put in the trash is anyone who spams, uses bots, 18+ material. Non other non-appropriate things, in the eyes of an average teen.