Wouldn't this give Facebook indirect control over your server? If Facebook wanted to they could just ban your account. Or change your password. Also it is far more likely that a hacker is going to gain access to your Facebook account over well protected SSH.
I think [1] is a better link, which actually explains how it works.<p>[1] <a href="https://coreos.com/blog/international-friendship-day.html" rel="nofollow">https://coreos.com/blog/international-friendship-day.html</a>