Mary Barra is the chairman and CEO of General Motors and with over 1.2 million followers on LinkedIn and over 48K followers on Twitter, it is clear that she is a well-connected executive. For many executives who act as a brand advocate on social media, one of their core strengths is maintaining consistency in their tone. In this article, we will take a closer look at how Barra’s social media strategy helps reinforce a positive brand image.   LinkedIn: Sharing Original Articles   First, we will analyze Barro's LinkedIn profile. The header image features a look inside a General Motors factory, emphasizing the industry she is in. Compared to her Twitter profile header, this is more brand-related and speaks more about the tangible products the company offers.     The majority of her content is brand-related, whether it is an original article, sharing a post from another...