We were discussing this in the "Shortness of Breath" thread.
Here is a link to a thread Ralph T showed me that shows cartomizers dissected after being vaped. For curiosity's sake, I pulled out the insides of a cart I was vaping at the time. The cart still had flavor, loads of juice, and was far from being at the disposing point. It looked similar to the pics in the linked thread, maybe not as bad, and it was soaked with juice. Definite scorched parts, and melted filler though. It really makes you think and question the use of cartomizers. I would welcome some info or a link to a post/thread that would alleviate my worries.