I'll be the first person to admit that Facebook privacy settings are confusing; they change so often that, at this point, it takes me about 10 minutes to figure out how to upload a photo, and that's only if I call my little brother first. (In my day, we walked uphill to school both ways and we were only allowed space for one profile picture! And your Facebook wall was like a lawless western frontier!)
But one would assume that Randi Zuckerberg (Mark's sister/reality TV show producer/the former marketing director of Facebook) would have a solid grasp on how it all works. Apparently not, judging from what we will now call Pokegate, which was captured by Buzzfeed last night.