-It's a great PR gimmick for Uber/CheezBurger and it's something others can learn from.
-Uber articles typically end up on HN because of their presence in SF and that a lot of HN users use Uber (all of the 50~ people that I personally know on HN have used Uber) or are otherwise connected to people who work at Uber.
-Ben Huh is awesome. He's a great advisor and him being involved means I'm going to upvote it.
-Kittens on demand = cool.
-Kittens, cupcakes, and raising money for a good cause = Awesome.