On the 3rd August 2011, Yahoo will display search results from Bing i.e. if you search for a product or service on either Yahoo or Bing on or after this date, the search results should be identical in terms of ranking. In a statement released on August 1st Yahoo said. “We wanted to let you know that we are now ready to transition Yahoo! organic search results (the non-paid listings found on the main body of the Yahoo! search page) to Microsoft. This is an important aspect of the Yahoo! and Microsoft Search Alliance and will help us toward our goal of further improving the overall relevance of Yahoo! organic results globally.
The organic search transition will begin on August 3rd 2011 for Yahoo! European properties in the UK, France, Germany, Spain and Italy.”Yahoo is not transitioning paid search results (pay per click) at this time but it looks imminent.