What's interesting about it? It's even less interesting than Twisted or POE, which is at least ten years older.
But I would say that's probably what people like about it. It's not interesting, it works and it's easy to understand. Perhaps that makes for a large ecosystem one day. V8 certainly gives great performance. That's a great combination.
(Personally I think the callback spaghetti makes for hard to read code. Let's just say I wouldn't want to debug someone else's code. And this is from someone who actually likes Perl.)