There was an interesting debate on HuffPost on March 27, 2013. If you haven't watched it yet, check out the video here
Participants: Dr. Michael Siegel (The Rest of the Story), Dr. David Abrams (Legacy For Health), Cynthia Hallett, Dan Henry, Gregory Conley (CASAA), and Katherine Mangu-Ward.
Both sides made some interesting points. Dr. Siegel came on top with his strong points, no surprise there.
The host made a pretty good point: the "burden of proof" lies with the people claiming that e-cigarettes are dangerous. Do you agree or disagree?