This isn’t a political rant. But as a businessman, entrepreneur, and social media professional, I’m deeply concerned by the US President’s use of Twitter, especially after this week’s comments on MSNBC presenters Mika Brzezinski and Joe Scarborough. Let’s be clear. If you are running or launching a new business your reputation is the only thing you own. You may not have an office, other business capital, employees. You may only have the germ of a business model. The only thin