It's impossible to feel any sympathy for Yahoo here. When they made Katie Couric their "global anchor" on the apparent belief that she was some sort of serious journalist, they either knew what they were getting into or were so ignorant of the real truth that they were investing in their own demise. And Yahoo has enough problems apart from the fact that the face of its news operation is a lying left-wing propagandist masquerading - and not very convincingly - as a news professional.
I seriously doubt that most Yahoo executives are all that acquainted with the nuances of journalistic ethics, or ever assessed with any depth Couric's credentials or lack thereof. They just figured: She's well known, she'll make us look credible and serious. Let's get her. They're not news people. However much of this crap Couric pulled during her previous gigs, it wasn't as easy as it is today for someone to get ahold of the original audio and post it on the Internet, so no one ever knew. (And if you think this is really the first time she ever did anything like this, yeah . . . )