The title of this submission makes it sound like a selling-fridges-to-eskimos scam product - you need to read quite a bit to find out what's it actually about and that it solves (or simplifies) an actual use-case.
I think a better comparision is with DynDNS services: It sets up a public host connected to your own machine - but unlike DynDNS, the host doesn't point to your machine's IP directly. Instead, requests are routed through a proxy/tunnel, so your machine can be kept behind a firewall and is only available through the public host.
(I figure, the proxy allows for some more neat tricks, such as restricting ports/urls/etc or holding requests open while your machine changes IPs.)
I think a better comparision is with DynDNS services: It sets up a public host connected to your own machine - but unlike DynDNS, the host doesn't point to your machine's IP directly. Instead, requests are routed through a proxy/tunnel, so your machine can be kept behind a firewall and is only available through the public host.
(I figure, the proxy allows for some more neat tricks, such as restricting ports/urls/etc or holding requests open while your machine changes IPs.)