Considerations for your upcoming transition
adCenter account
Soon, you'll need to either create a new adCenter account, or link an existing adCenter account to your Yahoo! Search Marketing account. Later this month, you'll see an "adCenter" tab within your Yahoo! Search Marketing account. Clicking there will take you to the beginning of the account transition process, where we'll walk you through the simple steps to create or link accounts.
Budgeting
Once you create your adCenter account, it will be active and your ads will be eligible to serve on Bing right away. As a result, you'll be managing both your new adCenter account and your existing Yahoo! Search Marketing account in parallel until ad serving for Yahoo! traffic transitions to adCenter, so plan to budget accordingly.
Microsoft Silverlight
With Silverlight installed, you'll be able to see and address key differences between your Yahoo! and adCenter accounts as you transition. Download Silverlight now.
Organic search transition
Yahoo! organic search results will be powered by Bing as early as late August. If organic search results are an important source of referrals to your website, you'll want to make sure that you're prepared for this change. For more details, check out this blog post.