The definition of a social network is taking traditional or in person networking activities online. It focuses on facilitating the building of social networks or social relations among people who, for example, share interests, activities, backgrounds, or real-life connections. Given the popularity of social network sites, it is obvious that more and more companies are interested in using them to enhance company’s strategy. Many large organizations had been looking for ways to extract business values from social technologies, and some of them had already run their own social network site on their own servers, what we will refer to as an internal social network. Our research, focusing on looking at the practices of real companies’ internal social network, may reveal some insights or give some inspirations.