adCenter is starting a pilot program to test image ads for their Content Network, including MSN sites. Image ads can be purchased on a CPC or CPM model. You need to have your own IAB standard creatives to participate.
Then, follow these instructions, per the adCenter blog:
1. If you manage your account on your own, then call the 1-800-518-5689 support line and ask to be enrolled into Performance Improvement program and the Image Ads Pilot
2. If you are in a Managed Service program, you should ask your Account rep about the Image Ads pilot
Optimising Digital Marketing Campaigns with Search, Social and Analytics
At SES London (9-11 Feb) you'll get an overview of the latest tools, tips, and tactics in Paid, Owned, Earned, Integrated Media and Business Intelligence to streamline your marketing campaigns in 2015. Register by 31 October to take advantage of Early Bird Rates.