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...