SEO Support Element (SEO-logy)

You should consider eight basic elements supporting the so-called SEO or SEO-logy:
1. Linkage Domain name
2. The title of your blog or website
3. Meta Keyword
4. Meta Description
5. Linking Content with Content
6. Site Map
7. Natural Listings
8. Back Links

Like that's about what is meant by SEO-logy.