Randi Zuckerberg, sister to Facebook co-founder Mark Zuckerberg, may or may not understand how to use the social network's privacy settings.

Randi, who was the former marketing director of the billion dollar company, recently posted a photo of the family's reaction to Facebook's new Poke app. The photo, which was intended to be visible to her Facebook friends only, was eventually posted on Twitter by Callie Schweitzer, a Facebook friend of Randi's sister.

Upset, Randi reached out to Schweitzer about posting the photo without permission. Unaware that the photo was private, she apologized and informed Randi that it appeared on her news feed and "seemed public."

Long story short: Randi is not placing blame on Facebook's uber-confusing privacy policy. Later, in a Twitter rant, she discussed the importance of social media etiquette, believing one should “always ask permission before posting a friend’s photo publicly. It’s not about privacy settings, it’s about human decency.”

Schweitzer later responded: "fwiw, I thought the photo was incredibly endearing which is why I liked it. We never see humans on the Internet!"

[via NY Daily News]