Cookies can help make the Web surfing more personalized and streamlined. But it is considered as suspicious web activity as many users regard them treat to the privacy. Probably cookies are misused and misunderstood features of the Web. Their basic function is simple and allow web servers to store and retrieve information on the client-side.
Web sites use cookies for a number of different reasons.
You can use cookies for personalization site. That mean to identify visitors and direct them to areas of you site that might interest them most.
This can be as simple as flagging new stories or products added to the site since their last visit or as complicated as rendering pages that are almost completely customized based on stored preferences.
Many e-commerce sites use cookies for online ordering and to track additions or deletions to your shopping cart. Sites can use session cookies that are valid only for the duration of that particular visit, or design them so that the user can return to the site days later and complete their transaction.
Cookies helpful for web site tracking with a more accurate count of site visitors. Using cookies, you can insure that someone who visits your site 3 times per day isn't counted as a unique user each time. You can also see how often repeat visitors visit and what items they view most often.
It is important to understand that cookies can not store any personal information about the user that the user does not voluntarily supply to the web site. Usually cookies do not contain viruses. A server can only get data from the cookie it wrote to the cookie file. It can not go information from the hard drive.
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