LiveSide has the story:
In its imminent update, MSN Spaces is to partner with Kanoodle, in order to bring pay-per-click advertising opportunities to its users. Spaces that contain BrightAds integration can choose to display ads from a variety of areas, which notably includes Adult Content. Spaces that wish to display sponsored listings must however be publicly viewable and contain content that is in English.
Hit the link for more and for a signup screenshot. Kanoodle has a variety of Web advertising programs that are competitive with Google and other advertising networks, but why isn’t Microsoft doing this themselves with an adCenter publisher program?