Just because it's not posted publicly doesn't mean it won't be used by whatever parties have it. Given that this seems to be an American posting (comments about pizza and beer) and not the badly-typed Russian hacker earlier, it would appear that two parties at least have a copy of this information now (or alternatively got the information independently). You'd be a fool to assume this person is acting in good faith, they've exposed a hell of a lot of private data by posting this alone.