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(Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg speaks at the Silicon Slopes Tech Summit in Salt Lake C... (Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg speaks at the Silicon Slopes Tech Summit in Salt Lake C... (Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg speaks at the Silicon Slopes Tech Summit in Salt Lake C... (Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg speaks at the Silicon Slopes Tech Summit in Salt Lake C... (Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg speaks at the Silicon Slopes Tech Summit in Salt Lake C... (Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg speaks at the Silicon Slopes Tech Summit in Salt Lake C... (Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg speaks at the Silicon Slopes Tech Summit in Salt Lake C... (Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg speaks at the Silicon Slopes Tech Summit in Salt Lake C... (Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg speaks at the Silicon Slopes Tech Summit in Salt Lake C... (Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg speaks at the Silicon Slopes Tech Summit in Salt Lake C... (Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg laughs, reacting to his calling Eagle Mountain, Eagle R... (Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg speaks at the Silicon Slopes Tech Summit in Salt Lake C... (Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg speaks at the Silicon Slopes Tech Summit in Salt Lake C... (Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg speaks at the Silicon Slopes Tech Summit in Salt Lake C... (Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg speaks at the Silicon Slopes Tech Summit in Salt Lake C... (Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg speaks at the Silicon Slopes Tech Summit in Salt Lake C... (Trent Nelson | The Salt Lake Tribune) Facebook CEO Mark Zuckerberg speaks at the Silicon Slopes Tech Summit in Salt Lake C...