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A distraught reader wrote in last night with a tale of woe. He'd just broken up with his girlfriend. "We had a conversation where I told her I would not announce it and just tell if people ask," he said. Still, we all have needs, and in a moment of weakness he changed his relationship status on Facebook to "single," and then clicked the button to delete the status change in his mini-feed. The dialog box promised "Hiding will remove the story from your Mini-Feed and prevent anyone from seeing it."

Unfortunately for this lovelorn gent, what it doesn't say is that the status change still goes out over the public news feed unless you've jumped through privacy settings hoops in advance. (I confirmed this in a test — don't worry, ladies, I'm still available!) Counterintuitive? You betcha. My advice? Whatever you do, don't post photos of your steamy rebound affair unless you're trying to make your ex jealous.