Hacker News Reader

It's on HN because somebody submitted it, and it's on the front page because enough people up-voted it to get it there.

That really is about as good an explanation as you're going to get :)

The cat's have finally made a through. D-Day for cats on HN :) Interesting, albeit nothing to do with HN

using a cat to kill mice on a ship is a hack. i would argue this is much more relevant than the political stories that make the front page.