Know what the world is looking for at yahoo search engine. Know the top searches being made and their score along with daily fluctuations. Also you can checkout popular search terms for a specific category. 

Find the latest top searches of the day or compare the popular search terms against number of years. Also you can compare your terms for specific country or city to see the historic trend performance.

Find out whats visitors are looking out at ebay with their search terms. Know the top search terms and utilize it in your further analysis.