Microsoft ContentAds have started showing up in digg.com and Facebook. These ads are only showing up for users in Internet Explorer. If you use firefox you still see Adsense Ads. This means either Microsoft’s ad serving doesn’t work for non-IE or they don’t have the inventory needed to supply Digg at this time. Or perhaps it is still in roll-out phase.

So I think publishers will have to wait some more time so Content Ads are fully functional and available worldwide.