Stupid question but what kinds of projects are people using Yeoman & Brunch etc for? I've been getting into lots of frontend MV* recently; a mix of stuff that I

Stupid question but what kinds of projects are people using Yeoman & Brunch etc for? I've been getting into lots of frontend MV* recently; a mix of stuff that I put in the Rails asset pipeline at work, and fun hacks on the weekend which I tend to use Brunch or Yeoman for. Are people using Yeoman apps in production? How does it work deploying them & handling load etc etc? I'm assuming that Yeoman is more useful than just toy projects?