Why should I register a domain name?
Each domain name in the world must be unique - only one company can register and utilize yourdomain.com. However, there are very few restrictions on domain names - anyone may register just about any domain name they wish. As a result, more than thousands of .com, .net and .org domain names are registered every day, effectively removing these domains from availability. So act fast now !! There is a strong possibility that if you do not register your domain name, another company or individual will!
About AU Domains
.au Second Level Domains (2LDs) e.g. http://www.yourname.com.au (this is a 2LD). Within the .au domain, there are several second level domains (2LDs). Each serves a specific type of enterprise and the options are outlined below. When it comes to registering a domain name, you can choose the 2LD which best suits your purposes. These 2LDs are known as "open" because they are open to the general public, subject to eligibility criteria.
com.au - For commercial entities, such as companies (with ACN as registered through ASIC), and businesses (registered with state governments).
net.au - For commercial entities, such as companies (with ACN as registered through ASIC), and businesses (registered with state governments).
org.au - For charities and non-profit organisations.
id.au - For individuals who are Australian citizens or residents.
asn.au - For incorporated associations, political parties, trade unions, sporting and special interest clubs.