In accordance with one or more aspects, service requesters (e.g., advertisers) and/or affiliates (e.g., providing data traffic) may be set up for operation on a performance exchange. In accordance with other aspects, performance and monitoring may be carried out for such advertisers and/or affiliates. In some embodiments, a quality assessment module monitors resource distribution by affiliates (including user response characteristics), and assesses quality characteristics of the distribution and related responses based on the monitored performance and stored affiliate data. Affiliate performance metrics are generated based on the quality characteristics. A router establishes routing criteria for service requesters, which may include information for selecting data traffic resources to be routed and served by the affiliates for providing traffic. An exchange module operates with the router to serve requests from the service requesters by routing resources to affiliates based on data corresponding to the service requesters, the routing criteria, and the metrics.