What is Propylene Glycol?
Wow dude... Seriously? That was pretty biased. I've done alot of research myself (including examining material data sheets and talking with physicians) and certainly didn't hear as much negative bias as that. Take a look at the science before you cut an paste a conspiracy theorists web site.
You know it's used in asthma inhalers, eye drops, and "personal" lubricants as well. It has a pretty long track record of being safe.