Recently we wrote about Yahoo’s new ad system, apparently designed to compete for Google’s adsense market. Up until now, MSN relied on Yahoo’s Overture to deliver keyword ads, but this appears to be slowly being displaced by a keyword ad system owned by Microsoft themselves. The search market is worth big bucks and the competition is heating up. It will be interesting to see how this MSN service evolves, and whether it ends up with a service like Google’s adsense or Yahoo’s Overture. MSN’s deal with Overture is due to end in 2006 and I suspect it won’t be renegotiated. Read more at CNET.