This also includes the right for X to sublicense the content, meaning it can offer it to other parties.
But it is the mention of AI which arouses the most concern and which has been taken up by news sites. The terms now state: “You agree that this license grants us the right (i) to analyze the text and other information you provide and to provide, promote and improve the Services, including, for example, for use and training of our machine learning and artificial intelligence models.”
The sublicensing element means that AI developers could purchase your content from X; and you will have no idea who is using it and how.
