It looks like Microsoft is working on a Windows Phone Marketplace Affiliate Program that will allow publishers to earn commission on app and games sales and it would seem that the Microsofts Windows Phone Marketplace Affiliate Program is in development and participation is by invitation only. The affiliate links go through microsoftaffiliates.com website which is registered under Microsoft Corporation and affiliate links like
http://www.microsoftaffiliates.com/z/1076/CD2908/ resolve to the the web marketplace
http://www.windowsphone.com/en-US/apps/540af928-3c9e-e011-986b-78e7d1fa76f8. these links are not optimized to be viewed on Windows Phone as the links resolve to the web marketplace instead of redirecting to the Marketplace App on the phone.
According to participating members it seems that affiliates get between 8% and 12% of app purchases ( from Microsofts 30% cut and not from the devs 70% ) and most paid apps are available via the programme with the exception of xBox Live games ( thats a bummer ) . It would seem some publishers are already invited to use this features eg ( improvisoft.com ) . If Microsoft is looking for more beta testers , feel free to shoot an invite our way and we look fwd to see this going public.