I agree to a point. And am cautious. My brother teaches adults and has more than once used himself as an example. 20 odd years ago, he went to a concert in Oregon with a group of other people. They passed a street sign that said Weed with an arrow to the right and below it College, with an arrow to the left. He insisted on getting out and someone took a picture of him goofing around under this sign.
This picture, which was not taken by him or posted by him, is now all over the internet, and can be found by googling "weed college".
In this society, all kinds of things that once would have been obscure moments or private moments, can be broadcast by just about anyone. My FB page does not ever contain anything that I would be uncomfortable with strangers knowing about me.