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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. Read Why You Need A Domain Name tutorial here (http://www.opensourcetutorials.com/tutorials/Getting_Started/Domain_Names/need_a_domain_name/page1.html)