Earlier this week Yahoo CEO Jerry Yang called it quits. The results? Their stock soared. It is bad enough thinking the company would be better off without you, it is another to have that reality confirmed by Wall Street the next day.

Yang’s “downfall” was pinned on his inability to close the deal with Microsoft. I disagree. There have been waves of bad decisions, including indecision on Yang’s part over the years. I cover these issues in my “How Yahoo Screwed Itself” blog post from last year.