> Don't you assign this copyright to the social media service? Most of the terms-of-service agreements I've seen state that the creator retains the copyright,

> Don't you assign this copyright to the social media service? Most of the terms-of-service agreements I've seen state that the creator retains the copyright, but grants the site a non-exclusive license to display the content. Assigning the copyright would be problematic. For example, a professional photographer who posted their photo to Facebook would lose their right to sell the photo or post it to another site if they didn't retain the copyright.