Apparatus and methods for waiving at least a portion of a service fee. Pharmaceutical compositions comprising the substituted indazole peptidomimetics of the present invention and methods of treating conditions mediated by the thrombin receptor are also disclosed. A corresponding wafer prober is also described. Once a buying group has been established, sellers can compete for the volume sale. The server can send the registration nonce to the client, which can compute a proof of possession of the service-application key and send to the server. It is possible to create etched features having predetermined slopes of from about 10 to about 70 degrees.