SEO

Google Webmasters Check your impression to click through ratio

Quantcast Check your site for demographic and traffic stats

Search Engine Optimization for WordPress

Easy Do-It-Yourself SEO for WordPress users

Yoast Yoast plugin

Paid SEO for Business

distilled Online marketing consulting

SEOmoz For SEO experts

web.com Starts at $300 / month

Articles

Search Engine Optimization (2007 style) -Abagond

Check List -Chantilly Patino

Schema Creator

Schema Creator Create the metadata / microdata that search engines understand.

5 Mini SEO Tips to Help You Get an Edge on the Competition