Google has gone on the record that domain name registration dates have no impact on search engine rankings. Google Webmaster Help thread has a post from Googler, JohnMu, who stated that it length of domain name registration does not make sense to use this as a ranking metric.
John states
“A bunch of TLDs do not publish expiration dates — how could we compare domains with expiration dates to domains without that information? It seems that would be pretty hard, and likely not worth the trouble. Even when we do have that data, what would it tell us when comparing sites that are otherwise equivalent? A year (the minimum duration, as far as I know) is pretty long in internet-time
.”
However I have found that older domains do appear more frequenlty in DMOZ, still considered a ranking factor albeit a fading one.
I laugh when I see listings on Ebay, espousing the virtues of their domain sale as an aged domain, and only registered for 3 years.
