Chatter about big layoffs at Viacom and its MTV unit have been in the air for weeks, with firings at the latter recently expected Wednesday or Thursday of this week. Hell, the bloodletting may already have begun. But the latest gossip says the worst is yet to come: A gobsmacking 300 people coast to coast let go by the end of the week, one tipster claims. Higher level staff supposedly get their briefings Wednesday. It will be interesting to hear whether the company takes this opportunity to visit vengeance on the mistreated permalancers who embarrassed the company so badly last winter. We're ready to listen!