Some people lose control online and say stuff they wouldn't say in real life
They may send emails to start arguments and that's called flaming and that can lead to flame wars
Some people go around looking to start flame wars and you call them trolls
Its easy to go around the internet unknown or anonymous
Some abbreviations or ok to use with friends but not with teachers and don't write in capitals cos it looks Like your yelling
Humor isn't always obvious in writing cos it be hard to tell cos you can't hear there voice or see their face
Always reread your writing before you comment
Make sure you ask permission before posting someone else and if you post it without checking it could Ruin a friendship and really hurt there feelings
If you post something you don't want people to see don't post it