Its clearly mentioned on News Websites that their contents are copyrighted.But i have seen sites where posters post whole story with little reference at the bottom.Isn't it violation of copyrights ?
Probably. Its hard to enforce copyright violation on the web. copyscape.com is a good tool to help you find copyright violators... but it can become very time consuming trying to protect your content.
There are various forums where posters post even without reference to the orginal news agence. Just Ctrl+C and Ctrl+V