Google Suggest

Google labs is experimenting with a new service based on their Zeitgeist information. The idea behind the service is "suggesting" relevant key phrases based on their collection of search history worldwide.

It works like this. Suppose you would like to search for a query like "learning spanish", when you type "learn" itself it gives you the options of choosing from various related queries seached till date. It can vary like, learning english, learning webdesign, learning interiors etc. You can either type the full keyword or choose the relevant one from the list. Each listed keyphrase comes along with the statistics of how many times it is used to search. Looks Impressive.

Chk Google Suggest