Nice demo! But someone has to play devil's advocate, so please allow me: why would I send commands about what I do in my house to your servers? Especially since you apparently even store them there (s. Inbox)?
Would you consider offering a version of your program that I can download and run on my home server? That would be cool...
Finally, since the title is "Siri as a Service", where do you expect the microphone to be in a Home Automation setting? Do you envision people using their cell phones for that?
Thanks.