I just went through security at FLL and a full bag search.
The reason was my new Provari. I had it near a Hershey bar, and because of the shape, battery, and organic material nearby it looked suspicious (the Provari looked like a detonator apparently).
After a full swab test, they pulled out the Provari and asked what it was, which I explained as an electronic cigarette. They were familiar with ecigs, but was surprised by this one.
In not bashing the TSA at all, they were very courteous and professional and doing their job... I'd much rather be delayed 10 minutes than have something bad sneak by.
I did not have a problem on my way here, but it wasn't near a candy bar.
Just FYI to other travellers... a metal tube with a battery next to a organic materials doesn't look good on the xray machine!