There are quite a few others which I normally come around when people want me to work on their site as a SEO and I would add them here.
  • Sites with .com rank higher then with TLDs
  • Pages with query strings don't rank as well as without query strings
  • Validation helps ranking and so I want Validated HTML.
  • High PR is quality link
  • Changing IP affects rankings?
  • Outbound links improve ranking

Also the complete lists are Search Engine Optimization FAQ's