Something like https://news.ycombinator.com/item?id=14752850, for example, could use this to run in the browser.
I'm quite openly a fan of the ethereum project for the reasons of applications like this, and more -- but I'm curious as to why you'd consider it an immediate detriment when it very well serves the purpose of the project.
I mean, ultimately the author could design his own blockchain or network, but why? The protocol exists, why not try and employ it?
So, in short, remember the Pirate Bay idea of putting drones around the world to host their sites, allowing it to stay up forever without censure? Moon does exactly that, without the drones of course.