This study systematically organized domestic Internet portal sites and investigated how the strategic dimensional elements of services provided by portal sites can be applied to Internet portal companies by introducing a causal analytical research model. The research results revealed that portal support services such as convenience, entertainment, and interactivity have a significant effect on customer satisfaction, and that customer satisfaction has a significant effect on revisit intention and recommendation to others. In particular, the revisit intention factor was found to play a mediating role between customer satisfaction and recommendation to others. It was also found that the customer satisfaction factor has a greater influence on recommendation to others than on revisit intention.