Client resources
Here are some tools and reference materials:
Keyword density analyzer (are keywords overused on your site? 6% tops)
Google AdWords Keyword Tool (for keyword ideas)
Google Traffic Estimator (for new keywords)
404 Checker (for bad links)
Robots.txt Checker (make sure your robots.txt file doesn’t cause problems)
SEO Tool Bar (for Firefox — tells Page Rank)
Google Webmaster Central (see what the search engine thinks of your blog/site)
HTTP Request & Response Checker (see what your header is telling search engines)
