1. A system, comprising: a global traffic management system coupled to a world wide area network; a content delivery network coupled to the global traffic management system; wherein a customer pays a fee to a service for use of the global traffic management system across the customer's Web servers and use of the content delivery network; a Web-based user interface that allows a customer to set weights for network traffic resulting in more network traffic being sent to a first IP address over a second IP address by the global traffic management system, the first and second IP addresses being associated with the customer's account.