SEOmoz has just posted version 2 of Search Engine Ranking Factors. It’s a compilation of opinions from 37 top industry practitioners/writers, regarding what factors are most important for Google in determining visibility rankings. The factors are broken into three categories:

1) Top 10 Positive Factors
2) Most Controversial Factors
3) Top 5 Negative Factors.

This is a great best-practices list to review and think about, especially when coming back to refresh the optimization of older sites. It’s good to see that the Top 10 Positive Factors are all ones that we’ve been recommending to clients for years, and implement whenever possible given a site’s design and sales/marketing purpose.