A system for sorting search results according to a buyer profile during the matching phase of an electronic commerce transaction includes a database containing a buyer profile associated with a buyer, the buyer profile comprising a record of the number of times each of multiple sort criteria has appeared in at least some previous events involving the buyer. The differential sinusoidal signal pair is distributed to clock receiver circuits, which may be differential amplifiers. Advantageously, the buffer memory is embodied with the aid of several modules operating in parallel. In a second embodiment, the operator of the power grid compensates the providers of fuel, energy or mass transit directly for the redeemed energy credits. Stretching of the film after the layers are coextruded together forms the voids andor cracks. The preferred ratio of hydroxamate to hydroxylamines is about 100:1 to about 1:1.