The missing Airbus over the Atlantic makes it ever more apparent that everyone is a journalist. Twitter is full of people (including myself) constantly commenting on the story.
Under the 'trending topics' section the term 'Atlantic' is rising up the list. Although at the moment (13:00) the topics above include Susan Boyle and #musicmonday. What that says about society I do not know!
The sources are generally from other news sources such as the BBC etc People are engaging making comments and giving opinions. With the plane apparently missing over the sea Twitter will not play as central a role as it did with the recent Amsterdam air crash, as I assume there will not have been any eyewitnesses or 'on the scene' reporting.
However, I think that this story also shows that journalism will remain a profession. For example with this current story much of the news is coming from the news agency Reuters as they have the means to gain access to breaking news. Much of the 'noise' on Twitter is information from news agency's and television/internet sources such as BBC News.
I think that this is a reminder that journalism is still very much a profession, especially when news is not accessible through eyewitnesses and bystanders.