When you are online it is important to comment properly. You can’t use slang or short forms of words for example:
LOL (Laugh Out Loud)
Sup (What’s Up/ Hello)
If you use short forms like these, other people might not understand what you are trying to say or they might think you are being rude to them. When you are blogging, you should only write things that you wouldn’t mind saying to that person in real-life (face-to-face). Remember once you post something, it can always be tracked back so think before you type.