I like both of these pages to get noticed or to keep in touch with friends and professionals. But the main difference that I see with using LinkedIn is it is more of a professional site and a better way to meet and stay in touch with professionals. The site is more focused on work and advertising the person father than Facebook that is more of a page to keep all or your friends updated on your life. I just see LinkedIn to be more of a professional site that makes your page professional and highlights the goals and the accomplishments along with the current positions they hold. Facebook is a great way to advertise a business, group, foundation, or hobby. But it is not a place to advertise yourself for any potential jobs or career paths.