I am starting this thread and add some of the tools which a SEO should have.Inviting all to contribute to this. I will try to make them in order : Keyword Researching/Suggestion : http://www.digitalpoint.com/tools/suggestion/ http://www.seochat.com/seo-tools/keyword-suggestions-google/ Difficulty Checker : http://www.seochat.com/seo-tools/keyword-difficulty/ Link Popularity : http://www.seochat.com/seo-tools/link-popularity/ SERP : http://www.shoemoney.com/serps.php http://www.seochat.com/seo-tools/multiple-datacenter-keyword-position/ PR,Alexa Rank,Backlinks : http://seo.galtech.us/PR/ Please do add more. Thankz
Seoquake allows you to obtain and investigate many important SEO parameters of the internet project under study on the fly.
This has been done already numerous times in these forums. Reading will show you this. Please try to come up with something new and useful.
Overture data is from January 2007, the system is no longer being updated so why research keywords from 9 months ago?