For eCommerce sites – Allowing user to pin their address on map

I think on eCommerces sites it should be mandatory to allow user to pin their accurate delivery address on map. It would allow delivery boys to locate the address and then deliver the goods. It would definitely save lots of time and money.

I have also posted an article on Medium about the same - here is the link https://medium.com/@shabirgilkar/the-ecommerce-customer-experience-2c24a6c1e1cc#.9t0u23dk5

What do you think?