According to this article printed in tagesspiegel.de, not having a facebook account should be the first sign that you are a mass murderer.
No facebook, no job offer.
The article mentions the fact that in the US, people were subject to handing their passwords over to potential employers, which privacy advocates, facebook, and the US government disagree with. But the article takes it one step further in claiming that not only did US employers have a legitimate point, but also suggesting that those who abstain from facebook could be mass murderers.