Why does that need JavaScript to load?

I think he mostly means the clarity of a screen capture vs. a shaky shot of a physical screen. I like the indy feel of this but it did give me a headache to watch (even though it's only a few seconds). If you want to feature the actual phone, maybe have it resting on a hard surface or otherwise steadied.

It obviously makes sense in this case, given the novelty value of it - it being on the frontpage of HN - but I think there's a better alternative for the frontpage of a service's website.