Nothing but a list of items here, along with some websites and books that could be useful.
Findability
Web standards + great content = findability
Standards
Semantic markup
Accessibility
Progressively Enhancing
Micro formats
Semantic Markup
Have image background with text -999 px indent
Leahy/Langridge Method
Keyword Placement
<title> tag
<strong> & <em>
Stylesheet filename
naturally in your content, keyword density should be less than 7%
link labels
alt & title attributes
URL
logo file [...]
