Use robot.txt to block parts of the site you don't wish the engines to index
Offer an HTML site map which is auto updated based on the XML site map
For sites running on PHP use an .htaccess file to avoid content duplication
Use breadcrumbs navigation across the site for better user experience and SEO
From time to time, view your site using a text browser such as SEO Browser to "see" how spiders are likely to find your on page content
If your site architecture has more than three levels, restructure it so to make the information more accessible to both users and spiders
Keep URLs short for better SEO and to create a better viral effect as short URLs are more memorable
Include your key term such as a product title in the URL
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