I've got a couple buddies who quit smoking cigarettes with those electronic vaporizers.
I've tried it.... I don't think it's the best way to go because you get so addicted to it too (it's not addictive like nicotine) but you just smoke with it more than you would with a normal cigarette :L
I quitted smoking after 8 years, 11 Month ago.
I bought candys and skyrim. 3 Days of a bit pain.
The hardest thing is if you eat something you need to smoke... but you have to stop yourself. And btw. let the cigarettes lying around near you. Look at them and tell yourself how awesome it will be without smoking.
And yes, i'm happy that i'm not sticking this ugly stick in my mouth anymore.