Very cool - nice work. I like the idea of charts to see change over time(your charts are great - sparklines might be useful for seeing an individual post's status over time).
Some ideas based on my similar project over at http://hn4d.com.
Another are of interest that I track is the change in the number of comments over time. This also provides an indication of current activity and interest over time.
Since you have historic data, perhaps a search would be useful. It might be interesting to see "longest lasting posts" or posts with the "greatest increase."
In any case - very nice site, well implemented and easy to understand.
Some ideas based on my similar project over at http://hn4d.com.
Another are of interest that I track is the change in the number of comments over time. This also provides an indication of current activity and interest over time.
Since you have historic data, perhaps a search would be useful. It might be interesting to see "longest lasting posts" or posts with the "greatest increase."
In any case - very nice site, well implemented and easy to understand.