From yesterday, Yahoo! Search Marketing advertisers in the US can now begin to move their accounts to Microsoft Adcenter. This is the first stage of the paid search transition between Yahoo! and Microsoft.

Last week in the US, Yahoo's organic search results changed over to being supplied by Microsoft Bing. This week Yahoo! and Microsoft have begun the paid search process. Yahoo! expects paid search in the US and Canada to be fully powered by Microsoft Adcenter before the end of October.

To start your account transaction now:

1.) Prepare your account for transition to Adcenter
When you login to your Yahoo! Search Marketing account, you will automatically be taken to a tab labelled "adCenter". Here you can review your Compatibility Report and fix incompatibilities between the two platforms.

2.) Transition your account to Adcenter
You can create a new Adcenter account or copy your Yahoo! Search Marketing campaigns into an exciting Adcenter account.

3.) Continue to manage your Yahoo! Search Marketing account
While we wait for Yahoo! Search to complete its move over to Adcenter you can continue to manage your Yahoo! Search Marketing account.

For more details, check the Yahoo! Advertising blog or the Microsoft blog.