Ryan Deiss released a new report called The Perpetual Traffic. You can download it at Code: http://perpetualtrafficformula.s3.amazonaws.com/perpetual-traffic-report/The%20Perpetual%20Traffic%20Report.pdf On page 15 of the report Ryan says, Without even thinking I can come up with at least one variable which does not fall into the three primary variables which he mentioned. Domain Age I am sure you guys can come up with lot more variables. Now, Ryan and his fans would probably come up with an excuse that the "Domain Age" factor falls in Content (keywords, domain name, tags, etc.) variable. Come on Ryan.. Admit it. You don't have enough knowledge to challenge SEO experts. PS: No offence to BHW members who consider Ryan as their favorite IM Guru.