Won't somebody please think of the children!!!! :-)
Smoking these is potentially less harmful than walking the streets of any major city in the UK given the air quality. I'm not saying these are ideal or even good for you, but since I've been using these, I've not smoked an analogue cigarette for 4 months.
For anyone who is interested - jut got 21 packs for £20, not including quidco. Basically, as OP says, you have to get the black tips. Buy them in multiples of 3 to qualify for 3 for 2. If you sign up to their email service, you'll get 20% off your first order. The 20% is deducted from the FULL price, before any 3 for 2 offers are applied or before the reduction for the black tips is applied.
actually i prefer to believe Public Health England, ASH and many renowned professionals in this field who have based on scientific fact, stated that e-cigs are at least 95% safer than traditional combustible tobacco. that given with the fact that smoking cessation is at its all time high !!
And yet it's commonly accepted that alcohol is fine and won't do any harm to anyone or anyone else around them, nothing in this world is truly good for you, everything can harm you in the extreme, they even say processed foods such as ham can give you cancer. Just accept what will be will be and live life and enjoy it, no time to be wasted on moaning and whining.