rcrc writes "Yahoo! Research Labs has recently released a new search tool that gives the opportunity to the user to choose whether they are looking for informational sites, or shopping sites, based upon a slider bar. This tool is currently in beta and more information can be found in the FAQ." From the article: "With the slider in the middle position, only the default Yahoo! Search sort is used. When the slider is at either end, only the secondary commercial/non-commercial sort is used. But when the slider is anywhere in between, Yahoo! Mindset presents a blend of the two sorting systems."