A common mistake *A LOT* of affiliates make is to focus too much Energy on building their second tier and not enough on selling Their business on the first tier.
I myself belive that two-tiered affiliate programs are overrated, If you have a website that PRE-sells effectively you stand to make Quite a bit more by concentrating your efforts on your first tier.
Simply put, if you plan to make a living online and build a serious Source of income from affiliate programs, you cannot rely on others To sell products for you.
When I got started I had this