A sub-domain is an individual and separate web folder that can be created and attached to the main domain. This sub-domain can have its own FTP password. It can also have its own private CGI-Bin folders, and all other characteristics of an individual domain. But this sub-domain need not be registered as a separate domain and this means that the affiliate need not spend additional money for the setting up of the sub-domain.

How can a sub-domain help an entrepreneur achieve success in his affiliate marketing business? A sub-domain can help the affiliate in two ways. These are optimization in search engines and diversification of the affiliates website.

Optimization in Search Engines

Sub-domains are usually recognized by search engines as an individual online entity. And since it is a separate URL (as identified by search engines), it will be listed on its own and not be a part the main domain. In affiliate marketing, such a situation is advantageous. The affiliate can promote products in a dedicated website that will most probably be ranked high, provided that all other search engine optimization techniques are used.

Of course, there is a specification that the affiliate must comply with. That is, the sub-domains name must be attached to the main domains name using a dot. For example, the URL will be subdomain.maindomain.com. The affiliate should avoid using the hyphen, such as in http://subdomain-maindomain.com. The hyphenated name will need to be registered as a separate domain and this will demand additional expenses for the affiliate.

Diversification of the Affiliates Website

The contents of the website of an affiliate should be relevant to each other. This means that products that are extremely different from each other should not be located in one website. Otherwise, the affiliate runs the risk of discouraging and confusing the Internet visitor. But how will an affiliate promote products that are wholly unrelated to each other but are both interesting and financially feasible?

The affiliate can create sub-domains. One sub-domain will be dedicated to one product, while another will be focused on another product which is distinct from the first one. In this way, when the visitor opens the website, he will only find the products and information that he is looking for. He will not be distracted by the presence of another product banner that he has no interest in knowing about.

Of course, the creation of sub-domains may need to be consulted with the web host. Some web hosts offer free sub-domains while others demand a charge. The creation of sub-domains also involves work. But, after such work, the income of the affiliate will significantly increase.