Code Optmisation

How coding of a website be optimised from search engine point of view?

-Semantic Markup
- Valid code
- Good Code to Content Ratio
- Seperation of presentation from content

You should use semantic code and CSS and avoid tables and java navigation where possible.

A practical example of SEO optimised code is to place the center column (with the content) in top of the HTML document, and the navigation below it, you can position the nav with a <div> so it will show on top for users who view the page. But there are plenty other things you can do.

[edit] briansol was quicker