1. A computer implemented method for regulating a proposed transaction over a distributed computer network between a first party and a seller that has a commerce site accessible to the first party of the network, comprising the steps of: providing a transaction intermediary machine (TIM) on the network, the TIM including a processor, a control circuit, a memory accessible to the processor, and a regulation application comprising one or more software modules encoded in the memory and executed in the processor; associating a transactional limitations database in secure communication with the TIM, the transactional limitations database storing in relation to each of a plurality of unique identifiers at least one age-appropriateness content rating criterion that has been established by a second party with respect to age-appropriateness ratings established by a rating agency, wherein the at least one age-appropriateness content rating criterion dictates one or more transactional limitations imposed by the second party on the first party with respect to the age-appropriateness of one or more products; responsive to a search query from the first party, providing one or more search results to the first party, the one or more search results conforming to the at least one age-appropriateness content rating criterion and reflecting one or more items prospectively designated by the second party for approval; generating a promotion directed to the first party, the promotion being generated based on (a) the proposed transaction and (b) the at least one age-appropriateness content rating criterion; receiving a request for approval (RFA) of the proposed transaction from the seller at the TIM, the RFA comprising information communicated over the network and including (a) a unique identifier provided by the first party to the commerce site of the seller, and (b) a set of details concerning the proposed transaction between the first party and the seller which includes an amount for the proposed transaction yet which is free of personal identification information of the first party; confirming that the unique identifier is among the plurality of unique identifiers within the transactional limitations database associated with the TIM, and thereafter: comparing the set of details in the RFA with at least one age-appropriateness content rating criterion stored in the transactional limitations database in relation to the unique identifier; approving completion of the proposed transaction and a payment to the seller from an account of the second party for the amount of the proposed transaction if the RFA meets the age-appropriateness content rating criterion the amount of the proposed transaction reflecting the promotion; and providing personal identification information from the TIM to the seller that is sufficient to permit physical or electronic delivery to the first party in fulfillment of the proposed transaction; and denying execution of the transaction if: (1) the unique identifier is unknown, or (2) if the RFA does not meet the age-appropriateness content rating criteria in relation to the unique identifier.