Yea, it has been on HN before - http://news.ycombinator.com/item?id=22936, but that was some 825 days ago! So I posted again by removing the / at the end.

Funny thing, when I did a searchYC, it shows http://news.ycombinator.com/item?id=620698 with the same link as the previous one posted 825 days ago, while I tried to post this one, it showed the old one, instead of showing the new one.

I think the duplicity check should be time bound though, maybe a year or something like that !