Why stop at average karma, we can also print a little histograms (sparklines) of comment karma, I bet the target audience of HN would love it :) Another way fo

Why stop at average karma, we can also print a little histograms (sparklines) of comment karma, I bet the target audience of HN would love it :) Another way for front-page ordering would be (total karma * exp(-beta * age)), you can tweak beta for time decay.