"Why [is] Facebook blue and not orange?" wrote a person from Chile.
"Can you add an option to change the Facebook theme?" said another.
Several others wanted a way to publish audio posts instead of just text and video.
One of the questions for Zuckerberg was deeply personal and philosophical.
"You are rich enough to not be motivated anymore by money," a user wrote. "You and your company are well known enough not to be motivated by recognition, and Facebook's powerful ability to act as a catalyst continues to grow. So I would like to know, what motivates you now?"
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