Keeping completely current with all the changes on the Web is an impossible task. But there are several services that can help by providing a current awareness service for monitoring changes in specific Internet information resources, from Web pages to news sites to Usenet news. The idea of a current awareness service, something that notifies a user when new documents are available, has been a standard offering from commercial online services for years. Current awareness services are a natural match for the capabilities of the Internet, but have been slow to win popular appeal.
http://notess.com/write/archive/9903.shtmlPosted by Ch.Naresh Kumar
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