> This message was written only because of my strange habit of wondering about things that probably don't matter.
>
> Sometimes I've seen Science Fiction written as, you know, Science Fiction. And sometimes it's written like Sci-fi (as in the Sci-fi channel) or SF. Personally, I call it SF because I get tired of saying "Science Fiction" over and over again.
>
> I was just wondering if Sci-fi and SF are incorrect and by saying them we garble the language terribly.
>
> Another thing. When you write Sci-fi, is the F capitalized or not? Or if it's incorrect, should I forget calling it that from now on? Or does it even matter?

Here's what http://www.m-w.com/ has to say on the matter:

You can write 'science fiction', 'sci-fi' and 'SF'. Note the upper case in the latter, and lower case in the two former.

Trav"SF could also mean 'sacrifice fly', 'sinking fund' or 'square foot/feet'"ho"what's a 'sacrifice fly'??"lt