I think it depends on what you're trying to search for. If you're interested in what stories Twitter users consider important it could be helpful. If you want t

I think it depends on what you're trying to search for. If you're interested in what stories Twitter users consider important it could be helpful. If you want to see what actions people are taking on Twitter in response to a particular story, it could be helpful. Otherwise, good old Google News is likely to provide better links to more relevant content.