From my previous post (is vaping addictive), I hadn't smoked in 25 years (since college). But after trying an e cig a the mall and getting 4 mg nicotine by mistake (instead or 0mg). The past three weeks I have been increasing until I puff about 40 times (today) on the 36mg. I did try the 0mg but it is like puffing air. I guess edbaar49 when he reponded by saying the craving for nicotine is always there lurking. While I am probably not hooked (yet) it is just so amazing to vap......