hbr | Social Signal

A LinkedIn profile is more important than résumé, more useful than a business card and more permanent than an email address. As essential as LinkedIn is to today’s professionals, many people still struggle with the question of how to use it or what makes it useful. That’s why I’m delighted that today marks the publication of the latest book in my Work Smarter with Social Media series for Harvard Business Review Press: Work Smarter with LinkedIn.