I just flicked the switch on http://hnrecap.com and thought I would make a tiny announcement!
The site was created for a simple reason: There is a big rotation of articles on the front page of Hacker News every day, and unless you are on here 24/7, you are bound to miss some great content and discussions. I was tired of this and the rss feed doesn't cut it for me since it doesn't preserve ranking information over time.
On HN Recap, rankings are somewhat preserved: Every 2 minutes, I request the HN front page, update articles and attribute points in the following simple fashion: #1 gets 30 points, #2, 29 and so on...
I did notice a small bug with the display of article titles with HTML entities in them but other than that, it works as expected. Once I have about a week's worth of data, I will also add a way to view archives from previous days so it is possible to catch up if you missed a few days.
I honestly just made it to fulfil my needs, but I thought it might end up being useful for others with similar requirements, hence this post.
Enjoy!