Well this report from Search Metrics will definitely help!
Having evaluated the top 10,000 keyword phrases, they looked at what the pages that got the most visibility- in this case search engine visibility had in common.
Some of the things won’t surprise you but what you do get is an extremely comprehensive list and the ability to download a report that gives you more detail.
We’re currently wading through the 72 page report and of course will be feeding back the nuggets we think will make the most difference with your SEO campaigns!
Download the report here http://www.searchmetrics.com/en/services/ranking-factors-2013/