Google Ranking Factors and SEO tips

Hi,
As an SEO expert one needs to keep a number of ranking factors in mind. While the actual factors are a closely guarded secret which will never be disclosed to prevent f these factors by site owners to tip the balance in their favor. However most of the factors are quite well known and every effort is made by different search engines to give a fair paying field for different websites.

Tip 1. Authority of Domain

Tip 2. External Link Anchor Text

Tip 3. Benefits of External Links

Tip 4. Keyword Usages

Tip 5. Visibility in Social sites