Positive Faktoren

1. Keyword Use in Title Tag
2. Anchor Text of Inbound Link
3. Global Link Popularity of Site
4. Age of Site
5. Link Popularity within the Site's Internal Link Structure
6. Topical Relevance of Inbound Links to Site
7. Link Popularity of Site in Topical Community
8. Keyword Use in Body Text
9. Global Link Popularity of Linking Site
10. Rate of New Inbound Links to Site

Mehr dazu unter SEOmoz: Ranking Factors Version 2 Released.