"Whether you prefer to tweet, post a question in our forums or pick up the phone and speak to a real person, you’ve got several options for getting help with all things adCenter," says Microsoft’s Tina Kelleher. 

The transition is of course already underway, but may take some time to be completed globally. Right now, they have contact information posted for the US, UK, Canada, France, and Singapore markets. 

Nielsen announced today that Bing has surpassed Yahoo in search market share for the United State for the first time, and that is not even taking the partnership between Microsoft and Yahoo into consideration. 

Microsoft began powering Yahoo’s organic search results on August 24.