A sub domain can be defined as a sub or the second level of a domain. Firstly it is imperative to find a host who can support them with no extra cost but with some efforts to create them by using a technical looking control panel. It is similar to a standard domain and ranks just like them. It is in fact a group of words that comes before the main domain and is like the directory of the main domain but acts independently and even works virtually like a separate website.
Sub domains, if used effectively can make a massive difference to the way people looks at your website. It provides you with tools that can be used to compete against your opponents that they cannot possible hope to imitate. Sub domain is a section of your main website that carries a pre name to your existing domain. It is often seen that webmasters simply modify the existing text that is already present in the main site and reuse it on the sub domain site. The content should not be just the same and the sub domain need not redirect to the main site.
Sub domains can be used to improve search engine listings as the links created from the sub domains to the main domain is considered as one way links from another domain. Even in pay per clicks, it plays a vital role. It is here that the sub domain can fit in appropriately and this will significantly increase the click rates. Since the keyword can be easily placed in the first part of the URL it becomes a powerful means of advertising a product.
The best way to exploit your sub domain is to keep them under the same subject area. They serve as an important gateway to the main website for both search engines and visitors. They can be submitted just like the main site to the search engines though it may require extra efforts while creating back links, avoiding the Google sand box and other problems associated with submission. Sub domains are generally considered as a portion of the package in any hosting plan and you are given the liberty of creating as many sub domains as you want.
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