I never grant apps access to my contacts. I no longer trust any app to know my contacts or associates unless the stated purpose of that app is to manage my contacts.

Not that it helps, mind you. People with me in their contacts likely do not practice such discipline. I’m probably just an isolated old weirdo because of it, but it’s my hill to die on. It’s a small, pointless hill, but goddamn it, Snapchat is never going to know the name of my furnace guy.