In terms of assessing a CEO's impact on an organization I think it could play an important role. For example if people are trying to knock down the doors to pu

In terms of assessing a CEO's impact on an organization I think it could play an important role. For example if people are trying to knock down the doors to purchase / use what Yahoo is working on but they're abandoning because of scalability issues or buggy systems or continuous delays in delivery timelines, this sounds to me like we're dealing more with execution issues. On the other hand, if the site / products hum along without glitches, yet are receiving little to no attention or traction from the outside world, this could be a sign that the company is on the wrong track in a more fundamental way. Perhaps more directly linked to the "output" / "work product" of Marissa Mayer as CEO.