You can download all your data[1]. You can also use the API (as an app, not an individual, IIRC) to query whatever else is visible to you. So someone could conceivably create a competing social network and offer an “import all Facebook data” feature, modulo privacy&#x2F;legal concerns.<p>[1]: <a href="https:&#x2F;&#x2F;www.facebook.com&#x2F;help&#x2F;131112897028467&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.facebook.com&#x2F;help&#x2F;131112897028467&#x2F;</a>