So famous is only for fast javascript browsers? That says it all... damn #hipstercoders.
And yes, it works fast on chrome, dog slow on Firefox. Since when did we decide to collectively ignore Firefox users because we want to use some fancy shmancy JS framework so we can write our code using an "opinionated" approach? And I quote "opinionated" as that is precisely how the readme describes the "famou.us" way of building "rich, fast web applications".