This is the great thing about personal vaporisers
They're relatively new to the market and no one can say for sure if there are any long term effects. The studies done so far look promising, but in reality we're all guinea pigs who have decided to take the chance. And in my opinion (and I suspect that of many others here), whatever risks may or may not be involved with vaping dwarf in comparison with the risks of smoking.
Back on track, if you're interested in concocting your own flavoured mixes, I've noticed that David Yang and Totally Wicked are now stocking unflavoured liquids with all their available nicotine levels, including 0mg. I'm going to place an order with David Yang for some of that stuff today or tomorrow, and try mixing it with various amounts of queens flavouring.
Back on track, if you're interested in concocting your own flavoured mixes, I've noticed that David Yang and Totally Wicked are now stocking unflavoured liquids with all their available nicotine levels, including 0mg. I'm going to place an order with David Yang for some of that stuff today or tomorrow, and try mixing it with various amounts of queens flavouring.