Be Careful What You Post- The Internet does not have a delete key, so any comment or image you post online may stay online forever because removing the original post or comment does not remove any copies that other people made.
Be Careful About Who You Meet Online – People you meet online are not always who they claim to be. They may not even be real.
Being careful online means giving serious attention to what you are doing, in order to avoid harm, damage, or mistakes.