1.The digital footprint I left behind might affect my future opportunities by inappropriate contents like, pictures, messages, comments. If job interviewers realize that someone was a bully, through his/her digital footprint, it might be an impossible thing to pass the interview for him/her, because no companies would like bullies in their company. Even if it is a tiny picture of birthday party, it could somehow give bad images to others.
2. I think not posting impropriate contents will be the best choice but it could be hard to some particular people. In that case changing account as privi te will prevent you from leaving digital footprint.
3. Campaigns and events will attract friends’ attention. Also using internet is good for teenagers to know about digital footprint.