Cardiff.
We move on to the next speaker at Future of Journalism 2009, Marcus Messner, whose focus is also on Twitter (and in fact, he and Alfred independently named their papers the same...). The focus here is on the use of this tool by mainstream media in the United States, however; such media use Twitter as a research tool, but especially also as a news dissemination tool, particularly for breaking stories, and as a means for building community.
Twitter was founded in 2006, and had some 6 million users by early 2009, this has grown to 20-30 million by now. Some 11% of Americans use Twitter, and the audience is comparatively older than for other social media forms; some journalists use it very regularly now, and there is a whole show devoted to it on CNN. Again, the disputed Iran elections were a major tipping point for the service, of course.