"Yahoo will almost certainly fire too few employees when it announces its mass layoffs this week," predicts Henry Blodget, the disgraced stock analyst everyone now listens to. Henry's got a bunch of charts you can look at, or you can read his kicker: "What's the smart amount of spending decline to plan for? We think about 10 percent next year and slightly more in 2010. We would also plan on the decline lasting at least two years."