Complete information about 404 Error (Broken Link)
If you are writing an article on a topic. And if there is any information related to it on any other website that can helpful for those people which are reading your blog. You definitely add those website links to your post. People will like your website or blog and get right information, and Google likes it as well. Therefore, insert the useful link in the post of your blog.
404 Error from Broken Link
Suppose you have added a link of another site or a link of your own website in your post. If for some reason the link of the page you entered in your post has been deleted or has been removed for some reason. So when people will click on that link, they will get 404 error on that page. If that happens, then Google does not like that thing and neither do people like such kind of error on your blog.
To avoid this, you should check the regular 404 error on your website or keep a gap of 3 to 5 days for checking. So that Google and our blog readers always stay connected to your blog.