When you think of social networks, Facebook or Twitter is probably the first thing that comes to mind -- but they’re not the only game in town. There’s another popular platform that’s used by 332 million people worldwide and gains two new members every second. At least 40 percent of its users check the site’s activity daily and more than eight percent visit during work hours. What site is it? LinkedIn. What is it about LinkedIn that makes it such a popular site for networking and what does the future hold for the company and its members? Let’s find out.