Essentially, Microsoft Advertising PubCenter is a system where website operators (“publishers”) can publish ads on their sites. The ads are served by Microsoft, which collects payment from the advertisers, and passes a share of that payment to the publisher. In that sense, it is very similar to Google AdSense (and a hundred similar programmes).
One specific feature of PubCenter is that it is also available for developers of Windows phone apps (which presumably also covers all Windows 8 apps). But it’s not - as you suggest - “an option for those wanting to promote Windows apps”. It’s for using apps to promote other products and services, which is not the same thing.
One thing I am not sure about is that Microsoft says the programme is “focused on large publishers”. I’m not sure if that means it is only available for large publishers.
Thanks for your comments. Yes, you did mention some good points. I’ve done some research in the meantime, and it’s somewhat clear to me from other web publishers, that this is not an option for most websites. There is hardly any information from Microsoft itself, and their “user” forum is all but deserted…that combo of facts basically speak for themselves. Unless we’ve missed something, we don’t see any point for small-medium websites to go in this direction.
One of the main things we want to “sense” if you will, was how many people have actually used AND benefited from this service. So far, 0 replies, 0 comments about actual experiences with this service. Let’s see what happens in the next few days, but this says a lot so far.