Affiliate Marketing Do You Focus On The Product Or The Market?
I think you should focus on finding a market first, sure finding a good product is important, but if you focus on the market (niche) then you'll have a higher chance of success, because you really never know how long a product will be around or if your 'selling model' will even work to sell the product.
One of the only times you'd want to focus on a single product is if you are building a site based on that one product and focusing on getting ranked for that product. Again, you are limiting yourself...
Why not write honest reviews for several products in that market (niche) that way your site will appear more helpful and will last longer?
The point is you have more options if you focus on a market rather than a single product, you'll last longer in the niche and have a higher chance of making a profit as most profitable niches have several good products that you can promote together or even create your own products to satisfy the needs in that niche.
" You can either give a man a fish and feed him for a day OR teach him how to catch a fish and it will feed him for a lifetime"