Hacker News Reader

The order is approximately upvotes/(1+time)^1.5

Comments don't give extra performance, but too many comments may trigger an automatic penalty.

Not sure, but I think the algo around placement has something to do with upvote velocity (now at 23 upvotes 10 minutes in)

dx of points over time.

mods can give posts a second chance, by hand. but only once per post.

In this case the rise seemed to come from the beginning --- 2nd chance queue usually takes a day or two and tends not to be newsworthy. I've had no 2nd chance notice (HN generally emails when resubmitting).

Several submissions earlier today of the IBM split by others didn't take. This one's success surprised my. HN is quite fickle.