🧙‍♂️A magic ranking algorithm for news boards/upvote based communities
📈 Score = (u-1) / (t+2)^g
u = Upvotes (-1 to cancel out the point of the original submitter)
t = time
g = gravity (a gravitational constant, to make the post decay)
🏆Posts are ordered by Score

This was used in the first versions of Hacker News.
📉 Here are some sample plots

And a @paulg comment that shows a lisp implementation of this