So I wrote and asked about the contradiction.
In the next sentence, you state that if the user deletes the content, “the license granted above will automatically expire”.
How can an irrevocable, perpetual licence expire? So which is it? Irrevocable and perpetual? Or only applicable as long as the content on your site?
Clive from Facebook replied surprisingly quickly. It’s not because he was falling all over himself with a clear and concise answer, I assure you.
Additionally, all users retain the copyright for any information they post on the site and all users must obey all applicable copyright laws in any use of the information on the site, including in downloading or printing any materials.
I hope that this clarified any questions you may have had regarding material that you post on Facebook. Be sure to let us know if you have any additional concerns.
His answer (and I use the term loosely) offers no clarity at all. Of course it’s unlikely they’ll use any given photo. Given the volume of material posted, they couldn’t begin to use everything. But the point is that they could at any time. ‘Unlikely’ is a far cry from ‘no chance’ which is why the clause appears in the document. They’re leaving the door open.
Also, the copyright issue is a dodge. If the copyright holder gives them perpetual licence to use any posted material in any way they want, they don’t need to acquire copyright ownership of the material.
I’d hoped they would treat me with some respect and answer the damned question. How silly of me.