Hello, 2 months ago I started a blog promoting products in an affiliate model. After 2 months of building forum entries, profiles and blog comments most of my articles describing the products on my blog rank pretty well. Around 15 products on an average position 10. Right now I am starting to use PBNs for linking. My question is shall I focus on all of the products/urls equally in regards to linking or shall I just pick 2/3 products randomly, get them to the top 3 and then catch up with the others?