|
Use rel="canonical" when you need to point search engine bots to unique content.
For example, you have one item in different categories:
mystore.com/products/copters/parrot-ar-drone
mystore.com/products/toys/parrot-ar-drone
mystore.com/products/gifts/parrot-ar-drone
mystore.com/manufacturers/parrot/parrot-ar-drone
|