A content management and delivery system that works with a publisher website to deliver access to advertising content within Microsites relevant to content accessed by the user on the publisher website. The system includes a computer program product for determining relevance of the advertising content with regard to a selected item of editorial content, and for creating a link to the advertising content in accordance with the relevance thereof. The computer program product ensures that when a user navigates to the advertising content using the link, the user is not caused to exit from a publisher environment.