The importance of domain pre-payment in relationship to Search Engine Optimization (SEO)!
Googles Patent
Domain pre-payment is in Googles Patent… but not the end of the story! Googles Patent application became public information according to United States Patent Application 20050071741 on March 31, 2005 Serial No.: 748664 Filed: December 31, 2003.
That day I went home to read the legalize mixed with geek speak and attempt to make whatever sense I could out of it… and I have to confess, I still find myself re-reading it 
When I got to Section [0096] Domain related Information I was very interested indeed because I knew it could effect hundreds that I manage Domain Name Service (DNS) for. Before I share the details of the story of how I tested the sole value of the domain pre-payment issue on Google and in my mind, I’d like to quote the Patent Application with a special attention to item [0099]:
[0099] Certain signals may be used to distinguish between illegitimate and legitimate domains. For example, domains can be renewed up to a period of 10 years. Valuable (legitimate) domains are often paid for several years in advance, while doorway (illegitimate) domains rarely are used for more than a year. Therefore, the date when a domain expires in the future can be used as a factor in predicting the legitimacy of a domain and, thus, the documents associated therewith.