I've heard about it only recently, and was amazed to hear that the device exists so long (since 2006 if I'm not mistaken). Couldn't understand how neither I nor any of my friends heard about it. My instant thought was that there must be something really wrong with it, either its very expansive, unhealthy like a regular cig or isn't something that can replace regular cigs. But it intrigued me enough to keep looking. Found several local online distributors in my country (poor marketing from their side as I didn't know about them), and eventually arrived at this great forum. But my case is different and still most of the smokers haven't heard about the product. Why is that? Why most of the devices are still made by unknown chinese companies? Why hasn't any of the big known brands from either the electronics or tobacco market started making and marketing them?