Free SEO and Internet Marketing Tools

Submitshop is a website that provides SEO services but it also has a very useful section that includes: Free SEO Tools, Search Engines Tools, Web Promotion Tools, Web Site Analysis Tools & Resources.
Among the free resources and tools you can find:

~ Google Dance Tools
~ Social Bookmark Submission Tool
~ Google Page Rank Checker
~ Search Engine Position Checker
~ Metatag Analyzer
~ Link Popularity Checker:
~ URL Checker
~ Meta Search Engine tool
~ Meta-Tags Generator
~ Free Auto Submitter tool to 20 Search Engines and Directories

So, if you´re looking for SEO tools Submitshop is another free resource you can use. I wanted to check Night Clicks links and I was surprised by the amount of information they provide comparing to other free tools I´ve used, specially the link checker data.
If you don´t know what the “Google Dance” is, you can read about it in this website, it provides a specific tool and a brief description of this concept.