Have you conducted or know of any research/studies that examines when the inherited value of a backlink is actually attributed to the detination url? Meaning if abc.com links to xyz.com today with a unique long-tailed anchor tag, at what point would Google actually recognize the value of that link to xyc.com (ie increasing in the SERPs for that anchor). My first inclination would be at the point of indexation of the link but from my own casual analysis, I havent proved this to be true. Obviously we dont know exactly how google does this, but have you drawn any conclusions based upon your own findings? Perhaps there's a period of link evaluation post indexation before passing value in terms of ranking relevance?
thanks!