What are your thoughts on the link disavow tool?

Disavow tool is used to disavow links that are harmful for your website. These links are excluded from ranking your website in search engines.

Disavow tool is the one which allows publishers to tell Google that they don't want certain links from external sites to be considered to rank web sites.

The Disavow tool is part of Google Search Console (formerly Webmaster Tools) that allows websites to discount the value of an inbound link, helping to prevent against link-based penalties. Google's war on link spam puts some online businesses at risk of organic search penalty, making the disavow tool an important asset for websites at risk of being penalized.