Hi Andy,
Thanks for the reply. So you meant you say that Google will take care of all spammy links and we really must not be using Disavow? Then what is the tool about? We can see many cases where SEO experts removing penalty of websites by using disavow tool by devaluing some bad links. (I am not speaking about paid links). How much Google can be accurate in devaluing all spammy links and not hurting any websites? Many SEO experts insists that Disavow must be used. I am really confused about newly generating backlinks and what to do with them?