Nikon D200 vs D2x followup

I’m seeing up to 500 unique visitors a day reading my now free D200 vs D2x article, but not a single follow-through purchase of any kind at amazon.com via the links that credit diglloyd.com with a sale. I know other sites have some success with these types of links (a win/win for everyone), so I hope they begin to work. Time will tell whether the free content model is viable with these affiliate links (which cost the buyer nothing), or whether advertising will need to be considered.