On the World Wide Web your domain name is your own unique identity. No two parties can ever hold the same domain name simultaneously; therefore your Internet identity is totally unique. If you have a business site on the Internet your domain name is your own online brand and in a sense you can use your domain name as your online business card.
With your own domain name your website and e-mail addresses for example will have that professional look, being unique to your business.
Many people often miss the importance of having and then keeping their domain name until they lose it. Once this happens they soon realize that they have lost their whole online identity.