Mistakes are really common in our lives. We all do many mistakes everyday. But, If you do any mistakes in Seo, it can easily destroy your blog. Even though, It is a small mistake, Algorithm's of Google, won't forgive you. You will have to face a permanent ban. Then, all your URL'S will be removed from Google and you will lose so much traffic. So it is better, not to make any mistakes in Seo.
Here is the list of some Dangerous Seo mistakes you should avoid