I'm sitting in a car showroom waiting for my car to be serviced so thought I would alleviate the boredom and post this.
Horizon is showing an hour long episode tomorrow night on BBC 2, investigating ecigs. Dr Michael Mosley took up vaping for a month, although he has never smoked in his life, and then studied the effects.
One of the facts discussed is that nicotine is virtually impossible to become addicted to unless it is delivered along with the specific cocktail of chemicals in tobacco smoke. Once you've become addicted via cigarettes you're addicted for life, but it would seem it's difficult to become a nicotine addict if you start off on ecigs...or any other form of nicotine ingestion.
Should make interesting watching. Here's the link to the background on the story. Available on BBC iplayer for those not in the UK.