What a silly Link, INFJ's are by no means the rarest type.
That would be INTJ's, followed by INTP's.
I'm rather sure INFJ's are quite average.
Oh, er, I'm from Belfast, suppose I could get the train,only takes an hour or two, but why would I do that for a bunch of INFJ's?
Hahah, just kidding, sounds interesting, but I'm afraid social gatherings of any kind make me squeak.
Edit:
Oh, seems there does exist evidence that claims, theoretically at least, that INFJ's are indeed the rarest type. Sorry, my mistake.
I did read somewhere that it was INTJ, but then, almost any argument holds some 'evidence' on the web these days.>>
Apologies.