i dont remember how i heard of it, but the first time was years ago - i got into it on a theoretical level, i didn't even try to test myself, j just read the theory and decided that it needs fixing, it inspired me into my own version but i had some pieces missing... a woman came along and helped me find the missing pieces, which was the first time my exwife impressed me intellectually, and then i forgot about it for the next couple of years.
then one day i came home and she was sitting in front of the computer and showed me the test results she got - INFJ. i took it and i was an ENTP. we where still madly inlove, the results didn't tell us anything we didn't know about each other, and it was more like a nice reaffirming slap on the back "yay the internetz is telling us we're made for each other"...
*retroactive caugh* bullshit *retroative caugh*
we didn't look further into it.
then a couple of months after we broke up, when i started missing her, i remembered the MBTI theory as sort of a milestone for us from our early days, i wanted to talk to other INFJs like herself to help me understand wtf went wrong... and it helped.
and now i'm already here so... why not?