Twitter is a coming goldmine for data visualization, given all the data it provides. The projects we've seen are still early stage, but Jer Thorp's been one of the best early experimenters. His new project, "Good Morning!" is a visualization of 24 hours of Tweets saying, of course, "Good Morning," from all across the world. Each of the tweets has been color-coded by time--green tweets are early morning, local time; orange occurs somewhere around 9am; red tweets are late morning; and black represents Tweets that are "out of time," meaning that they don't correspond with actual morning hours.