What you post can affect you later in life. If you post one silly picture, it can ruin your chance at your dream job. The discovery can give them a negative impression, causing you to not get the job. when you don't get the job, you don't have money. no money means no place to live. guess you better post some nice photos!
i really hope this helps you out. I'm not the best when it comes to summarizing , so i hope i did a good job. Cheers!