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