Hey all, just wanted to chime in about us using this at Nodejitsu. Hook.io makes it much easier to have a huge mesh network of drones for us and greatly simplified our management code for child processes on our stack. If you are looking for an easy way to have a mesh network or a master/slave network Hook.io will be great.
As for personal use, Hook.io is amazing since it is like a mesh network and IPC event bus put together. I create modules, a way of using deamons supporting features through hooks makes life easier and allows them to be services kept alive out of my process.