I would probably stick to the biz model of spreading out your "investment" over a well researched array of affiliates....spread the risk factor out as well as give yourself the opportunity to realize some hidden potential within some "lesser" affiliates. You never know when one investment (in this care) an affiliate, might slow down for you. By having some traffic going to other areas that are still producing for you, hedges against any major swings you could see by focusing to tightly on one affiliate. My 2 $0.02