It’s a little datalog script - input is a text file, output is a text file. I’ve used it a few times to decide what to pick up at the store!
Because someone posted it, and others upvoted it, and it got enough upvotes while it was new to get recognized by the algorithm and promoted to the front page. Now you know, and knowing is half the battle!
In short: somebody thought it was interesting enough to submit, and enough other people voted for it that it got to your attention.
That's it.
If it ends up with 2000 points and sits on the new page for 3 days, I'll be quite surprised, but strange subjects do that.
Site seems to be crushed under load