What you post stays yours
Ratings, walls, verdicts, comments, chat messages, your bio and your avatar are yours. You are not signing them over. What you give us is permission to store them, show them to other people on the site, and include them in the aggregates the site is made of — the community fingerprint for a game, the rankings, the wall map. That permission lasts as long as the content is here and no longer.
Aggregates are the exception worth being clear about. Once your rating has been folded into a game’s published fingerprint, deleting it changes future recalculations; it does not reach back and unpick a number that has already been averaged with hundreds of others. Nothing in an aggregate identifies you.
You have to have the right to post what you post. Screenshots of a game are usually fine; somebody else’s art as your avatar, or a paragraph copied from a review site, is not. If something here is yours and should not be, the takedown page is the fast way to say so.