Domain backorder is a service provided by ICANN-authorized companies and it's the most effective way to obtain a good domain name which was owned by some third party and was left to expire. When the registration period of a site is over, the aforementioned becomes inactive, but isn't erased instantly. Instead, the owner has two months to renew it. In case this doesn't happen, the domain enters a deletion period that lasts about 5 days and after that it is deleted, so anyone could register it. The backorder service will allow you to place an order for such a domain with a registrar company and they will try to register it instantly as soon as it is available. This way, you will be able to get a short and appealing domain name for your site and although such domains are registered on a first -come, first-serve basis and there's no guarantee that you'll obtain the desired domain name, using an automated system will give you a better chance than if you keep checking whether the domain is erased and attempt to acquire it personally.