Why?

Why would anyone eliminate the three best tools for finding things from their lives? We were looking at some of the more interesting search products that exist out there. The ones that are not one of the top three - Google, Yahoo and MSN. Looking at them, my thoughts were "would I ever use this, really?". As long as I can use Google, get what I want in the first page or two, why would I look at something with clouds, faceted navigation, and so on. To try and force ourselves to use these new tools, we are eliminating the top three from our tools for finding stuff on the web.