I like what twitter does. You can keep track of people, places, businesses, tagged words, events and on and on. I also like the idea of bringing tweets into a more public setting. This idea is an LED light matrix that broadcasts tweets as they appear on an iPhone. The user would download a special twitter app just for this device, hook up their iPhone or iPod touch, and watch each tweet appear on the big screen. A restaurant could have a screen mounted in their eating space that shows all tweets @mentioning their name.
