LinkedIn just announced they now have 100 million users on their website. The professional social networking site has been around since 2003. Out of the 100 million users, the majority is 44% U.S. users. Other countries that have shown substantial growth with users are lead by Brazil, Mexico, India and France. While 20% of LinkedIn users are in the service industry, 9% are in the high-tech business of some type. LinkedIn has been like the Facebook to many in the professional world and is continuing to connect people through out the world.