what are the advantages of making visualforce components in salesforce?

Hi Sushant,

Visualforce components are rendered intelligently by the platform. For example, rather than forcing page designers to use different component tags for different types of editable fields (such as email addresses or calendar dates), designers can simply use a generic <apex:inputField> tag for all fields. The Visualforce renderer displays the appropriate edit interface for each field. Visualforce components are page-centric and most of the work is done on the server.

Thanks