Mark McKeague, a student at Queen's University Belfast, has invented a radio that tunes in to and broadcasts messages posted on the social-networking site Twitter. In addition, the tweets are sorted by sentiment, such as happy or sad, based on their content. McKeague, who studies music technology, has created an interactive version of this radio twitter that allows people to listen to messages posted on the website in real time.

"I came up with the idea when thinking about the amount of information that is being broadcast on the internet, through numerous social networks and personal sites," said McKeague in a press interview. "There is so much information being broadcast and most of it goes unread and unnoticed. I wanted to find a new way to use this information."

McKeague found a radio when he was home for Christmas and liked its old-fashioned style and feel. He took it apart and added an Arduino microcontroller, commonly used in DIY electronics projects, that picks up on the radio's tuning dial. He added a connection to the radio's speakers and wrote software to download tweets and send them to the radio. See a video of the project here: