Site Age

Site Age
Google patent - Old is best. Old is Golden.
Age of page vs. age of site. Age of page vs. age of other pages on site.
Newer pages on an older site will get faster recognition.
Site structure
Number of pages - The general seo rule is: the more, the better.
And some other things in site structure.
Negative
In on page optimization these are the negative factors
No ACTUAL body text on the page Text represented graphically is invisible to search engines
Link to a bad neighborhood Don't link to link farms, FFAs (Free For All's)
Also, don't forget to check the Google status of EVERYONE you link to periodically. A site may go "bad", and you can end up being penalized, even though you did nothing. For instance, some failed real estate sites have been switched to p0rn by unscrupulous webmasters, for the traffic. This is not good for you, if you are linking to the originally legitimate URL
Redirect thru refresh metatags Don't immediately send your visitor to another page other than the one he/ she clicked on, using meta refresh.
Excessive cross-linking - within the same C block (IP=xxx.xxx.CCC.xxx)
If you have many sites (>10, author's guess) with the same web host, prolific cross-linking can indicate more of a single entity, and less of democratic web voting. Easy to spot, easy to penalize.

POSITIVE OFF-Page SEO Google Ranking Factors
Search engine submission
Directory submission
Article posting
Forum posting
SMO (Social media optimization)
Link building