Parked Domain
The Parked domains feature allows you run a single website from multiple domains.
This is very useful if you buy the same domain with different extensions.
eg mydomain.com & mydomain.co.uk & mydomain.net
These could all be parked onto your existing domain giving you complete brand protection, but you only have to maintain a single website.
The domains are mapped onto to the account in a seamless fashion so if a user enters any of the following URLs they all end up in the same place and as this isn't web forwarding the URL entered doesn't change, therefore less potential of confusion for browsers.
If your domain was urdomain.net, and you then parked urdomain.com on top,
*urdomain.com/shop/ & *urdomain.net/shop/ would open exactly the same page