FDA examining safety of new electronic cigarette devices.
Electronic cigarettes, also known as an e-cigarettes, personal vaporisers (PV), or electronic nicotine delivery systems (ENDS) are electronic inhalers that vaporise a liquid solution into a mist, simulating the act of tobacco smoking. Electronic cigarettes are no longer marketed as smoking cessation aids or tobacco replacement in most countries.
There may be similarities between conventional and some electronic cigarettes in the physical design and the nicotine release, which may approximate the same amount of nicotine as a conventional cigarette. There are many electronic cigarettes that do not resemble conventional cigarettes at all.
The benefits and risks of electronic cigarette use are uncertain as they have been poorly studied. The World Health Organization recommends against making claims that they are safer than cigarettes or that they help with stopping smoking. Laws vary widely concerning the use and sale of electronic cigarettes and accompanying liquid solutions, with pending legislation and ongoing debate.
Read more here http://en.wikipedia.org/wiki/Electronic_cigarettes