Despite Facebook (NASDAQ: FB) shares hitting an all-time high just days ago, many investors are not happy. Not because the stock hasn't performed well, but because Facebook continues to have glaring corporate governance pitfalls and they're frustrated with CEO Mark Zuckerberg's lack of accountability.The social media juggernaut's annual shareholder meeting last month merely served as a reminder that His Zuckness exerts complete control over the company, as the shareholder proposal to eliminate Facebook's supervoting Class B share class was easily struck down (again).