And another point about consent made by @dentangle when apps ask you for access to your address book, don't give it.
You can't consent on your contacts behalf to give information to Facebook to help them build shadow profiles. Well you can upload, but your contacts didn't explicitly consent.
https://www.makeuseof.com/tag/facebook-shadow-profiles/
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@onepict @dentangle I've never done this with anything. A decade ago, there were a rash of Linkedin spam emails because it entrapped people into sharing contacts and then mailing them if you didn't catch the defaults. Extremely shitty behavior. Don't build surveillance capitalism's social graph for them.
