Canonical Link element is a search Engine Optimization feature that accepted by Google,Bing and yahoo etc.This feature help you to save from Duplicate content and duplicate URL.
Suppose you run a e-shopping website and same Link to a particular page containing price,product details,etc.with same content in ll this pages,.
- Go to Dashboard > New Post
- <link rel="canonical" href="www.yourblog.blogspot.com/2011/10/mobile.html">New Mobiles </a>
General Term is <link rel="canonical" added prefix to Links.