SEO Tools: What, No Kitchen Sink?

What does this tool do:  Offers a large array of free Keyword tools to help with your initial competitive site research. 

Cost: Free

Who Needs It: An important SEO tool for anyone wanting to identify keyword data from total searches, and traffic estimates to pay per click, Google trends, keyword suggestions, synonyms, and much much more.

Info Page: http://www.seobook.com/

Comments: 

Helpful tutorials will speed you along in the learning process at this comprehensive site that gives you the data to help improve your traffic, page rank and Search Engine Optimization (SEO) IQ.