Your web site is located by an IP (Internet Protocol) address such as 67.15.4.94 and is accessible on the Internet by typing http://67.15.4.94. Instead of typing a series of numbers which are difficult to remember, you can register an easier to remember domain name which becomes associated with your IP address. Visitors typing an easy to remember domain name will be pointed to your IP address. Similar to a 1-800 vanity phone number, some domain names pertain to the subject of the web site, while others may simply be the name or an abbreviation of your firm

Lawyer-Advertising-Blog.com is the primary domain name for my blog, which is instantly obvious that it is a blog concerning lawyer advertising. When you type that domain name into the address bar of your browser, the domain name servers on the Internet know that you're looking for http://67.15.4.94 and take you there. You can have multiple domain names pointing to the same web site. For instance, I also registered LawyerAdvertisingBlog.com (without hyphens) which is used for branding because people never type hyphens. Because some people may remember the name incorrectly, I also registered many other domain names such as AttorneyAdvertisingBlog.com, LawFirmAdvertisingBlog.com and others, all of which will bring the visitor to Lawyer-Advertising-Blog.com