I would actually trust people in this site more than many others. I would still do some due diligence though.
I do see the humor though - even though the situation is not similar, it made me think of the website http://ismycreditcardstolen.com/ - we used to share it around as a joke :-)
I guess I'm not a hacker.
Not really, because anyone that has been using the site for a while would know that "hacker" isn't "hacking" in the "break into computers and do bad stuff" kind, but the "hackathon" kind.
It would also be reasonable, albeit somewhat presumptuous, to assume that there are a number of black hat "hackers" on a site that shares a camaraderie around the hacking spirit and shares many security related stories/vulnerabilities.
I think your statement is also somewhat presumptuous. Sure there are software devs with a hackathon mindset. But what about the white hat hackers or technology managers who are not devs?