When i was a searching for a way to get rid of that, i came to know about a wonderful project by Ramanathan Narayanan a Ph.D candidate in the Department of Electrical Engineering and Computer Science at Northwestern University. It was really a mind-blowing job by him. The project is to determine and filter the best twitters who are concerned with a particular trending topic. It was really cool.
His project actually finds the Pulse of the Tweeters .
Click the above link, you will know a lot about this guy...