Abstract: The Internet Activity Rating System provides a system that allows for collection, representation, analysis, rating and the distribution of the Internet user's activity information. As the user browses the Internet, by selecting the Uniform Resource Locator (URL), and interacts with the commercial and the non-commercial sites, the user activity is sent to the Internet Activity Persistence Broker, which stores it in the Internet Activity Information Domain. The format of the activity persistent storage is defined by the Internet Activity Format definition. The main purpose of the Internet Activity Format is the aggregation and the rating of the Internet activity information. The Internet Activity Information Domain makes the activity information and its rating available to other Internet sites that request the information as well as to individuals who wish to verify and perhaps modify their activities.