LinkedIn has quickly become an essential networking took for professionals across all demographics, as evident by its estimated 100 million members. Often referred to as the Facebook of business, this professional networking site can be a valuable resource for MBA students. While comparisons to Facebook are inevitable, the way people use LinkedIn to connect to others reach a different market. Rather than connecting users to one another for social reasons, LinkedIn connects users to the business world providing them with a virtual platform to display professional work experience, connections, and groups. It’s a one stop shop for anyone who wants to market themselves for job opportunities, business endeavors, or networking opportunities. Still not convinced that as an MBA student you should begin utilizing this tool to begin establishing your professional presence on the Web? Here’s a look at the service they’re providing… and how successful they are.