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The same here :-)
Yes. Twitter can also be used as a great search engine as millions of tweets do the rounds each day on all subjects around the world. So you can find any topic on it using its search button.
Venkatachari, I didn't think about the possibility with Twitter. Good idea. :-)
Yes, it is. But you may require some patience and time in doing with it. You will get tweets related to your search object and by clicking at the link of your related material, you may get the information needed by you.