I tend to usually get asked by smokers. Can't say I've had a lot of non-smokers ask about it. And, oddly, many know what it is and usually just ask to confirm if it's an e-cig, probably because I'm using it indoors and NC has a no smoking indoors law now. Had a woman ask about it yesterday, she was a smoker, and I realized 15 minutes in that she'd asked enough questions about it that I'd taken mine apart to show her how easy it was to use. But it was worth it. She was really interested in it and wanted one, and she was considering one of the ones you get at the gas station before I explained my ego and where she could get one local.