I don't want to start a big, angry discussion but thought it interesting that this manufacturer is recognizing a major problem with its product.
I bought one of these online several years ago.
Here's the bulk of the email:
Dear Sharon,
Our records show that you may have purchased a USB e-cigarette/Constant Power Cigarette from Green Smoke (USB e-cigarette), which is pictured below and was distributed by Green Smoke between approximately May 2, 2009 and May 22, 2014. Green Smoke has learned that plugging the USB e-cigarette into a faulty power supply could result in an electrical shock.
Please stop using the USB e-cigarette and contact our Customer Service team to learn how to return the USB e-cigarette to Green Smoke. After we receive your USB e-cigarette, we will send you a complimentary kit which includes a rechargeable battery, a USB charger, a pack of cartridges, and a coupon code for 30% off your next Green Smoke purchase*
Yeah....I could get another one to risk this again......and did you notice they don't claim it is totally their product but if you use a faulty power supply there could be a problem.
Think about it!