title: Symfony2 internationalization for better SEO strategy
body: <p>What is the best SEO strategy for a symfony2 website in many languages? </p>
  
  <p>I have created my routes as <code>/{_locale}/route</code>, like "<code>website.com/en/test-page</code>" and "<code>website.com/de/test-page</code>".</p>
  
  <p>Is this a safe and professional way to do this or should I hide the language from the url (this way it could be <code>website.com/test-page</code> for both languages). Or even create dns aliases like de.website.com and en.website.com ?</p>