Brilliant FREE SEO tools

It looks to me like the days of paying big money to do keyword research at Wordtracker are over. Aaron Wall at SEOBook has a stack of brilliant free SEO tools, but the big daddy amongst them has to be the Yahoo! and Google Keyword Suggestion Tool. If this set of tools were packed into a package and sold by subscription, people would pay a good couple of hundred a year to use them. Brilliant resource and one to bring up if an SEO ever tells you they are charging you soooo much money because of all the software & seo tools they have to subscribe to.
Jim wrote about these seo tools a couple of weeks ago and I have to thank him – I didn’t know SEOBook had a tools section, but I suspect I’ll be visiting every day now. Thanks Jim, and big thanks Aaron.