The Periodic Table of SEO Ranking Factors

Here is a handy chart of factors to consider in your SEO (Search Engine Optimization) efforts by the good folks at Search Engine Land.

Use it to
1) evaluate your current status: how are you fairing on each of them (from none at all to perfection – but also "doesn't apply" might be a valid response
2) determine what you could change
3) research how you can achieve your targets
4) figure out how you can measure your progress
5) make a plan
6) apply your strategy with periodic checks on the results

Search Engine Land have the table in many forms including a PDF here