Before we applaud China for inventing the ecig, let's wait a while for some definitive studies on safety. I know there have been studies, however tainted, but we still don't know what happens to vapers after 20 years of inhaling flavors meant to be ingested or PG and VG, which are meant to be topical, not heated and inhaled.
Call me a skeptic, but it's too early to have a party quite yet. In the 60s, the Kent Micronite filter was lauded as the ultimate
tobacco cigarette filter. It's technology filtered fine particles and tars out of the smoke. People loved it ... until some started developing cancer from the asbestos it was made from. I hope
vaping turns out to be the best and safest thing since sliced bread. Right now, all we can say is that it is probably better than smoking cigarettes.