Should I use the ID before or after my keywords in the URL?

Selected answers from the Dumb SEO Questions Facebook & G+ community.

• 
  Mimetix: Hi, i would like to optimize my url's for an online shop and i have a doubt.
  I have seen in most important pages that the URL includes the ID of a product or object before the name. Webs like amazon, stackoverflow or even Google.
  For example www(dot)example(dot)com/products/id/productname ;
  instead of: ;
  www(dot)example(dot)com/products/productname/id
  Doing a bit of google research, i found that Google always shows in green the part of the url that you are looking for. For example, if you search for ;104189069628334 you will see that appears first a facebook page like: ;https://www(dot)facebook(dot)com/pages/Yo-tambien.../104189069628334?
  So, is it relevant? should i use the ID before or after my keywords in the URL? Thank you all.
• 
  Muhammad Usama Masood: Www.example.com/product-name is good approach. 
• 
  W.E. Jonk: From the expert panel in this weeks SEO Questions hangout on air on 01:23:48 into the YouTube video: https://dumbseoquestions.com/q/should_i_use_the_id_before_or_after_my_keywords_in_the_url