What are some page ranking factors that are not related to keywords?

Page ranking factors that are not related to keywords are as follows:

There are ads on the page.

Use descriptive tags.

W3C standards validation.

The freshness of the page creation.

Unique substantive original content.

There is Google Adsense on the page.

There are links to other websites on this page.

Use Fash (or something else that requires a plugin).

The ratio of formatting codes to visible text in HTML.

Whether the URL contains parameters is a dynamic URL or a static URL .

The page content change history (how often the page content is updated).

The page contains links to other URLs under the same domain name.