This post just asserts the existence of a right that comes out of nowhere. The rights you have on a website are established by agreement between you and the sit

This post just asserts the existence of a right that comes out of nowhere. The rights you have on a website are established by agreement between you and the site's creator. You are free to not post on the site if you disagree with the terms of that agreement. If you choose to post, you have apparently come to the conclusion that the exchange is mutually beneficial. If you think that APIs for content sites must be free, I think you need to offer more to justify it then this does.