The micro-blogging web site Twitter is often crowded with extraneous posts and comments that distract from the site's meaningful content. To bring order to this chaos and help make Twitter a more useful tool for educators, web developers at Purdue University unveiled a tool this week that would help Twitter members find the most popular and relevant tweets.

The Twitter program, called Need4Feed, is being used for the first time at the HighEdWeb 2009 conference in Milwaukee, where attendees can sift through hundreds of posts to find the tweets grabbing the most attention.

Purdue technology officials first considered the idea of Need4Feed...

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