Word from Redmond that the MSN's invitation only adCenter pilot that Danny blogged about on October 13th, was officially launched in the United States today. Again, it's invite only at this point but you can apply for an invitation here. MSN will select participants in the program on a "rolling basis." An intro to adCenter and more about the program here.
Want to discuss? Visit our Search Engine Watch Forums thread, MSN adCenter Pilot Program Notification.