It was nice of you to pixellate the image, but you might want to remove the link, too. "Here's a web site with a bunch of people's private information on it" isn't the kind of thing you generally want to post to a high-traffic web site.
Anyone curious enough to click can just as easily search for "OutsideLands Lost and Found"
Outside Lands actually tweeted out the link earlier, so it certainly wasn't a private site.
But the point is, if you were worried about the information going public, why not exercise some of that "great responsibility" and not push further traffic to it until the problem is fixed?