Dont think ive ever seen ibtl, qft or qfe!
Is fubar an acronym for f**ked up beyond all recognition
yup also "any recognition".
IBTL is normally used in response to a troll in a forum, I.E. the thread will be closed/locked as its breaking the rules.
QFT = This man speaketh the truth!
and QFE = well... just incase someone doesnt get the point, or perhaps a point is lost in a long paragraph, snippets can be quoted for emphasis.