The reality is, no matter what alternative domain you land on, you're going to have to buy it. I like the domain iMelissa.com, but of course, someone owns it.
What's more important for you is building more an audience/following. A short form product video is critical. The only videos I can find, take a full minute before I see "Melissa" do anything. Longer, before I see what the hardware/form-factor looks like. You would really benefit from a video like this one: http://www.indiegogo.com/projects/canary-the-first-smart-home-security-device-for-everyone
Something like that would be more shareable. You've had some nice press- but it's not very sharable- which might explain the small following you currently have on your social pages.
Hope that's helpful, would be happy to chat more.