Instead of the usual network practice of giving advertisers "make goods" when programs fail to deliver a guaranteed audience, NBC has begun reimbursing them, according to MediaWeek. The publication said on its website Monday that NBC advertisers received an average reimbursement of about $500,000 each for ratings deficiencies in the fourth quarters. The network is unable to give make goods because it is essentially sold out except for the week following Christmas -- generally regarded as an undesirable week for advertisers, MediaWeek indicated, noting that ratings are down for all the broadcast networks, a problem that arose even before the current writers' strike. Meanwhile, the writers' strike will make it more difficult for the networks to hype their midseason shows this winter. The Television Critics Association announced Monday that it had canceled its usual press tour that had been scheduled to be held in Universal City, CA in January. It reportedly costs the networks between $250,000 and $500,000 each to preview their shows for the writers each year.