Now this looks like a cool service with some seriously plausible potential. RebelVox lets you leave an instant voice message for someone without ever having to call them. I guess that’s the easiest way to explain it. It’s not available now, but this well done video below will walk you through the basics. It’s main goal is to make your voicemail experience more like your email. Discretional and non interruptive. The video is tailored to the iPhone App side of things, but is reportedly being developed for multiple platforms. Looks very cool. Check it out.