saad75607,
Actually, we give recommended targeting with each product at the bottom.
Unless it is a niche product, we recommend going super broad with no interest, this is what’s working best right now in terms of profitability.
Let me give you an example.
A dog coat – ONLY dog owners will buy this, since it is useless if you don’t have a dog. For this product, target dog owners.
Winter gloves – since everyone has hands, you can target everyone in cold countries, no need for interest targeting, targeting people with interesting in gloves, or interests in outdoors is likely to lead to much much higher CPMs and less profit.
Hope this helps
David