Seo is the process of optimizing a website and it can be done in many ways following are some key considerations-

1. Place Your Keywords In the Title Tag
2. Proper Use of the ALT Attribute
3. Anchor Text of Links
4. Quality of Inbound and Outbound Links
5. Proper Use of Header Tags
6. Importance of the First Paragraph
7. Ensure Your Site is Accessible
8. Use SEO Friendly URLs
9. Site Usability

These are the best ways to optimize the website.
1. Forum Posting
2. Social Bookmarking
3. Article Submission
4. Link Wheel.

I think Forum posting is the best way to promote a website better..