Joi-Marie McKenzie This post originally appeared in the BI Today newsletter. You can sign up for Business Insider's daily newsletter here . 'Your LinkedIn is trash' Those were the blunt words I heard from Latoya Antonio, a Spencer Stuart advisor, as she gave a presentation on how to ensure executives are prepared to join boards and other forms of executive leadership. I was sitting in an ornately decorated conference room at ExcelerateHer Women's Leadership Summit, founded by PMM Agency CEO Kimberly Blackwell. Still, Antonio's wise words made my ears perk up because even though it was harsh, I knew it was true for many. How often are we poring over our LinkedIn profile and not just listing our experience, but curating it to strategically position us in our careers? Business Insider's newsroom is filled with LinkedIn fans, and it reminded me to take a peek at my own profile to ensure it's up to date with best practices. So, I reached out to LinkedIn for their advice on how to boost your profile.…