Gave up on arbi?
I think long term content sites are good if you can keep up with them. But they're hard to maintain and can be a real drag if you don't have a real interest in the subject.
Most affiliate sites I've seen have minimal content. For the most part (if you're doing PPC advertising), its just a simplistic but visually appealing minisites with an introduction to the product you're pushing, a brief pre-sell, and then your affiliate code plastered in somewhere to drive the user to the publisher's site. I think that's a good starting point.