One of the most enraging things about life since 2005-ish is that no matter how private and careful I am, it doesn't even matter because every other inconsiderate fool I know and interact with will HAPPILY let some random company have access to THEIR contacts--which includes me--in order to play Farmville for a month until they get bored of that and offer up my private information to the next bullshit ad company that asks for their contacts.

It used to frustrate me that people didn't care about their own privacy, because I genuinely didn't want evil people to hurt them. But, it's even more angering that people don't have the common decency to consider whether their friends and family would want them sharing their phone numbers, email addresses, photos of them, etc.

Or add your real name to photos of you stored in Google Photos.

Famously, that's how shadow profiles got created for Facebook and LinkedIn and many others.