Tea consent analogy applied to opt-out data policies.
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The difference between what you are doing here and the other public profiles you mention is consent. When a user creates a profile on Stack Overflow or Hacker News, they are consenting to share whatever data they give on that particular platform. When a user created a profile on Triplebyte, up until now, they were consenting to that data being used in a private profile for the purpose of connecting them with job opportunities, privately. Now, you've emailed all of your users on a Friday evening to say "by the way, if you don't opt-out in the next week, we will take this data that you gave to us under the assumption that it would be private, and make it public (and potentially searchable)." By saying "we'll do it unless you say no", you are not getting consent. If you're familiar with the tea analogy of consent, a la this video , this would be like you saying "well, other users (not necessarily every user, or you, the user in question right now) have had tea (not necessarily the same type of tea) from other platforms. This is just like that. So, if you don't say no to our tea in the next week, we're going to drop the tea on you. We hope you enjoy!" You are not just "launching public profiles for a product that has not had them in the past", you are launching public profiles and on them you are _sharing data that was given to you under the agreement that it was private_. You are using data that folks gave you in a very, very different way than for the purpose they gave it. Finally