It occurs to me that not only are they less than half the price of a name brand cigarette at $70.00 per thousand, but that researchers and their flunkies may be tempted to smoke them. This makes me wonder if any of them became addicted to the taste of that particular cigarette - what happens when something like that becomes your brand of choice? You're not going to find it in a vending machine.
Go ahead and follow that first link - the University of Kentucky gets extra points for the type of backwards web design only seen in academia - check out that PDF of a ten year old fax!
In other news, The FDA said today it has received reports of suicidal thoughts and aggressive and erratic behavior among patients taking Varenicline (Chantix) as an aid to quitting smoking, so be careful out there.