Nice concept. But I would like if you could display much more far back. And perhaps also how much upvotes each one got. Look at hneasy.com and maybe contact him.
The upvotes thing is tricky because it's very time sensitive. I thought about it for a bit, but besides the difficulty in judging when to update the points, it also goes against the goal that all Show HNs are given the spotlight even if they didn't do so well.