I've been largely ignoring Yahoo! (not difficult to do, I'm sorry to say to those who work there) for a long time, but I was recently pointed to a critique of the new logo they've seen fit to inflict upon the world.
And I agree with all of the points of that critique. Plus, I'd add that the chiseling is its own disaster as well, because the shadowing it engenders is completely inconsistent. Especially focus on which parts of the Y are lit vs not. Then notice that the ! and the O before it have their shadows on opposite sides. In fact, the A might be the only letter completely consistent with itself (if the light is shining straight down from above); all the other letters show a left-right bias as well.
In summary, OUCH!