My initial impression on the first question was that he didn't really have an answer. If it was a completely new issue, I might consider being slow and delibera

My initial impression on the first question was that he didn't really have an answer. If it was a completely new issue, I might consider being slow and deliberate in his response a point in his favor (I often prefer no statement over a poorly prepared one). However, this is not a new issue, and he's been telling the Facebook users that they don't actually want the privacy they're asking for. He didn't repeat that answer this time, but he evidently hadn't thought about a different answer. At a quick glance, it seemed that on being confronted with it like this, he realized that people aren't buying it. Whether this impression is true is still an open question. If it is, the problem goes beyond "not interviewing well," and Facebook may be better off reducing his direct influence. If not, he just needs PR staff to take the questions.