Following needs to be consider while purchasing a domain name for registering your website:

1. Generally, a domain name is comprised of a second-level domain, a "dot," and a top-level domain (TLD). The wording to the left of the "dot" is the second-level domain, and the wording to the right of the "dot" is the TLD.

Most common TLDs:

.com commercial, for profit organizations
.edu 4 year, degree granting colleges/universities
.org miscellaneous, usually non-profit organizations and individuals
.net network infrastructure machines and organizations
.gov U.S. federal government agencies

2. As more people are now investing on domain names, this is important to remember that ".com" is the most common and widely used Top-level Domain(TLD) and hence this is worth investing.

3. The domain name should be short and easy to remember. This helps to make your visitors remember about your website.

4. Domain name should be clear and easy to spell or make sure to spell. If your business name is difficult to spell, it is preferable to buy a key-word domain name instead.

5. keep your domain name elegant and user-friendly. Search engines give lot of weight to keywords in the domain names when rendering search result pages. It's easier to get positioned on the top of the search page under certain key word if you own a domain name with that keyword. So if you are providing web design service and "web design" is your main key word, it's worth to find out if web-design.com or web-designcompany.com is available. But these are not required as long as you think about your brand and your customers first.

6. The portion of the domain name between www. and TLD (.com, .net, .org) usually have some trademark rights and protection as registered trademark. Please read Trademark Registration of Internet Domain Names http://www.uspto.gov/web/offices/tac/notices/guide299.htm

7. Don`t infringe the law while registering for a domain name. Refrain from buying domain names of recognized brands or trademarks that don't belong to you, even if they are available. violation of copyright laws can be dangerous.

8. Please visit the following site in order to find a domain name for your business:

http://www.internic.net/whois.html

9. You can purchase a domain name starting at around $8/year with free parking. You will have to buy domain hosting package separately - depending on your needs and your budget. Some companies offer free domain registration for a year, if you host your website with them. Be very careful choosing your host.

10. It is important to find a good hosting company in order to make it feel your online presence. It is advisable to register your website with those hosting companies which provides good customer support and guaranteed uptime. You can take assistance
from many online research materials that are available online.