I like the Wikipedia definition: (
http://en.wikipedia.org/wiki/QFT)
"QFT", internet slang meaning "quoted for truth". This term applies on forums and posting boards where users can edit their posts, thus the QFT holds the poster to their original statement. It is also used to express agreement with a previous poster's statement and validate its veracity. Other variations include "quoted for truthiness" and "quite [censored] true".