"a linguistic system categorizes news headlines as different 'moods' using keyword scoring from a vocabulary of 160 words & phrases, after which the ratings are visually represented through a simple color spectrum ranging from green to red."
So, now you can decide whether you want the good news or the bad news first (or at all). Mood News is a proof of concept created by Davy Mitchell.
One of the bits of good news I found was that optimists less likely to die of heart disease or a stroke. Good news if you are optimist (I have an optimistic disposition - yipee!). Not such good news for the pessimists...I suppose they were right.