If you have about an hour to read all 15 pages of this thread, you'll see why so many people don't like ECF.
http://www.e-cigarette-forum.com/forum/general-e-smoking-discussion/8842-anyone-interested-cannabis-hemp-e-liquid-flavor.html
Read all 15 pages, it's a big heated argument. It got me so frustrated! This is one of the reasons why people do not turn to ECF.