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I advise you to build a good site from scratch about a subject that you are familiar with and work in good affiliate links.
From my past experience, this will get you good search engine traffic and true targeted visitors that will purchase from your affiliate links.
I would use a feed but use a tool with it. There are tools that can manipulate the output from feeds. Do a little seafching and they should jump out at you. I am not saying to avoid original content, I think it is a blend that works the best.