Oh, one other feature I'd like: prediction confirmation & statistics. Plenty of news stories & opinions declare "X says Y will happen by date Z"; I'd like to mark keyword Y for followup, either reporting that it actually happened or that date Z came & went (or, say, it happened but a couple weeks late), and in the long term document X's success rate as a prophet. Lots of predictions get made in the news media, but nobody ever holds 'em to it.