I have been seen more articled about Yahoo! Mindset which is basically a beta product (aka. in research phase) that gives you a new way of relating searches to your needs.
It has a slider. On one end is "shopping", on the other is "researching". when you move the slider to a side, results of the search changes accordingly. I just started playing with it and thingking that it is in beta phase one should not have high hopes but I think it is a cool idea!
Oh BTW, while you are the, take a look at Yahoo Research page.