I am in the process of creating a website, hoping to write content on several different niches on it and using affiliate links, advertisements, and promoting my own eBook to make money. I am still in the "write the content and research/gather information on different traffic generation methods" phase. I am hoping to get some tips on PBNs from some experienced members. How important are they? Is it something I should invest time and money into after I get my site up and running or is it something better left for later on? Also, If I don't want to create them myself how much does it usually cost to have them created from start to finish for you?