I've decided to try and learn F#, but when I search the job sites, it *always* comes up with 0 jobs. Has anyone worked anywhere that uses it?

Is there a special thing that only can be done with F#?

Probably you should ask a question to yourself: -
What makes F# to different from other language? And why companies should use this language?

Sorry but I had never heard this language before so, i don't know much about it.

usually they are tagged .net instead