This is a good question and I was longing for this question. I didn't want to ask about it and I was somewhat lazy to search through the forum to know if it has been discussed before. My idea of this question came when Ratimov deleted some posts of his that were so relevant to the community. No one questioned his behaviour in a way of stopping him. That is because he owns the contents and they are his intellectual properties. Having received hundreds of merits for such post, didn't change that fact that those contents were his.

Based on the instance above, I can conclude that the forum does not own any post, including the one made by admin. This is just an open forum where people help one another with their knowledge. Here is not a higher institution or a company.