Add a Canonical Url Tag to every page!
<link rel='canonical' href='...' />
It’s the single most crucial tag to help Google Crawler to understand your website and to improve your SEO.
The canonical tag will tell Google crawler that a set of pages that differ only for their Url are in fact a single page and there is no need to index all of them. The Canonical URL will point to the favorite url to access them, in particular the url Google should use when returning the pages as a result for a search.
To learn about another other two crucial tags, <title> and <meta name=’description’>, read my eCommerce Tip #116: Title tag and meta description are strategic for your SEO.
Franco Folini lives and works in the eCommerce territory, a wild area between the Kingdom of Technology and the Kingdom of Marketing. He speaks fluently the language of both realms. For many years, Franco has been helping people bridge the divide and successfully collaborate.
If you want to find out more about Franco, visit his LinkedIn profile or send him an email folini[at]gmail.com