Paul Wylie said
1 year, 3 months ago: @chrisloeser Let me get this straight each affiliate has their own sub-domain.*child (so far so good). Each of these sub-domains are a mirror of the domain *mother. That is also fine well maybe…
You can have marketing material for your affiliates e.g. banners, text ads, video etc. that will be used across all of your children. However, the content articles, can’t just be copied and pasted mother to child that is certainly duplicated content and will need to be changed our else you will get slapped by the Panda. 
Do you have an Affiliate Agreement? Here is a good read on what you need to include to protect yourself.
http://searchengineland.com/important-restrictions-to-include-in-your-affiliate-agreement-48718