The document discusses LinkedIn, a social networking site for professionals with over 38 million members worldwide. It allows users to maintain contact lists and profiles, find connections and experts, collaborate on projects, and participate in business discussions. The document provides tips for maximizing profiles, such as keeping them fully completed and updated, as well as tips for boosting personal branding through LinkedIn groups, applications, and links from other online resources and profiles. Finally, it lists several LinkedIn and LinkedIn-related websites.