The "past" link is a nice feature, but what I'd really like to see is a way of weeding out duplicate stories before they're posted. For example, today there were 9 similar stories posted (so far) about Facebook's new "dislike" button[1], causing none of them to receive a significant numbers of upvotes. Could we have a feature in the "submit" dialog that displays similar stories in the last 24 hours and then asks the…
I do agree that it would be good to weed out variants of the same story (or better, merge them), and we're open to working on that. But today's features are more modest—nothing more than a way of easing the manual work that many of us are already doing. Not least yourself!