@2clicker, there were many discussions of this formaldehyde "finding", Dr. Farsalinos (interview starts at 10:20) wrote a rebuttal to NEJM as I recall it's mentioned during this clip
I don't know what all the fear-mongering is about. People inhaled burning fermented tobacco + garbage heaps for centuries. I'm not for banning anything, but smoking tobacco is unquestionably a cause of many disastrous illnesses. It's also extremely habit-forming. No technique for quitting smoking has been more than marginally effective until e-cigs came along.
Yet the anti-smoking crowd has advanced the argument that "maybe, in spite of no credible evidence having appeared, e-cigs are harmful", and people accept that "maybe" as being somehow equivalent to the certainty that cigarettes are devastating. The interesting (but predictable) result is that the people who believe the anti-ecig stories are least likely to quit smoking.
No question that badly made liquids and cartomizers can emit ANYTHING. It's like Diethylene glycol, that was found in one sample years ago, and is now paraded as being a prevalent risk. It's odd how the cartomizers that are tested are always the very worst examples of chinese crap manufacturing. As an alternative to the known 100% harm caused by smoking, vaporizing isn't risk-free, but it's harm reduction.