Your Site Name
A website name (also known as website address or the domain name) lets the internet users know what you are about. Names with with more than 15 characters to describe the content or speciality of your website is common. Visitor's will be able to remember the name more easily rather than searching on the internet for your website for a second visit.
When selecting a domain name you should consider:1. If you already have a company name try to find a domain which includes your company name.
2. Include words in your domain name which are relevant to the content.
3. It is probably best that your domain name is relevant to the content although not absolutely necessary.
4. Can your website content be categorized in a web directory such as DMOZ.org based upon the domain name only?
5. Consider if you domain name is used in other extension eg. .net, .org, .com, .co.uk, .ie.
Domain Name Extension
Choosing the right domain extension is also essential. The .com extension is the most popular and very widely referenced domain for commercial websites. .net extension is mainly for service providers such as hosting companies and network providers. Country specific domains (such as .co.uk, .us) are also popular within individual countries. For example, if you do business in the United Kingdom, getting a .co.uk will create a local branding and attract more visitors from U.K. Sometimes advertisers look for such country specific domain extensions for promoting their products.It is wise to choose a domain name that is not used by any other company with another extension. There might be legal issues later where you might have to give up your domain due to trademark or other violations. Domain registration is very cheap nowadays.