A client approached me in developing their 7 y/o domain. Now, from what I've heard aged domains have much more trust rank in the eyes of Google. However, I've also heard that it's important to consider aged domains with an SEO history... and this domain has not been used for anything. 0 backlinks. So my question: What is the defining factor in gauging the effectiveness of an aged domain? Merely the fact that its been registered for 7+ years, or a history of SEO?