AllTheWeb had one thing that Yahoo! needs/want more: Sid
I'm starting to understand this now.
..and remember, where theres traffic; theres Yahoo. So instead of closing AllTheWeb down, or keeping the old FAST results, Yahoo! decided to expand its current search technology and focus on only one thing, instead of three. Wise choice in a commercial sense. Not that wise in a "I give what users want" sense.
AllTheWeb had one thing that Yahoo! needs/want more:TRAFFIC.