What does TTFN stand for?

What does TTFN mean?

TTFN	Ta Ta For Now Academic & Science » Amateur Radio
TTFN	Ta Ta For Now Internet » Chat
TTFN	Totally Totally Fun Now Internet » Chat
TTFN	Training That Fits Now Community » Educational
TTFN	Take That For Now Miscellaneous » Funnies
TTFN	Talk To Farkin Nerds Miscellaneous » Funnies
TTFN	Terran Transolor Federation Navy Miscellaneous » Science Fiction
TTFN	Ta Ta For Now Computing » Texting
TTFN	Tenure Track Faculty Network Academic & Science » Universities