This looks interesting because the vast amount of data that Google has is sure to surpass any offernig by any other company. Overture has long been used for keyword search frenquency statistics because Google didn’t offer anything similar. This could be a move in the other direction.

Google AdWords announced that they have added “global trends” to the Keyword Tool. Global trends shows the search volume of a particular keyword phrase, charted over a 12 month historical period. To access this data, you can go here and then enter your keyword phrases. Then click the “Get More Keywords”, after the page loads, on the right side, select from the “Show columns” drop down menu, the “Global search volume trends” option. You will then see this data charted for you.

searchenginewatch