One of the basic consideration in web 2.0 concept is 'tagging' where any contents in the web can be associated with one or more tags, which can be shared among social community network. It lets others to find any content according to their chosen tag. Tag is nothing, but a way to categorize any web content. In real world, any visitor can quickly reach to a content thru it's associated tags, can thus get a basic idea about whether s/he will consider it to read/download etc. "Search" is older concept ......