There is no point reinventing the wheel every time you need to create content. You need to leverage the SEO articles that you have been writing for your affiliate site.
Your content can be used over and over to build quality links back to your website from Web 2.0 sites and high ranking content sites.
The Google Panda update doesn't mean that you shouldn't use authority sites to build traffic. It means you need to spend a little more time to improve your article's uniqueness.