I see every body saying its just water vapor, but there really isn't any water in the juice. Well, I add a little water to my VG to thin it down because I don't like PG, but most people use a PG/VG mix. But for most people there isn't any water vapor, it would be glycerin/glycol vapor. Know what I mean? Is it just easier to tell people its water vapor? i.e. when some one asks you what it is you just say water vapor with nicotine. I see my .... local news station do specials on e-cigs some times and they are constantly calling it "water vapor" with nicotine.. and talking about the dangerous unknown side effects and how they blow up in your face! Really annoys me... idk why.