title: Url with pseudo anchors and duplicate content / SEO
body: <p>I have a product page with options in select list (ex : color of the product etc...).
  You accede to my product with different urls :</p>
  
  <ul>
  <li>www.mysite.com/product_1.html</li>
  <li>www.mysite.com/product_1.html#/color-green</li>
  </ul>
  
  <p>If you accede with the url www.mysite.com/product_1.html#/color-green, the option green of the select list is automatically selected (with javascript).</p>
  
  <p>If i link my product page with those urls, is there a risk of duplicate content ? Is it good for my seo ?
  thx</p>