I'm Tamske, naming myself after the good board game Tamsk.
I learnt of the MBTI system some months ago, and I like it very much. I don't understand everything and this is precisely why I signed up.
I'm also an amateur writer and I used a test with my characters. So:
Myself: NTP. Not sure if I'm E or I. Tests give both answers. I've made a little test myself, which also indicated the "strength"... and that one gave a very weak E. I'm happy with that :-)
Most of my main characters are ESTJ's. Actually, most of my characters are, which makes my stories rather boring. I finally succeeded in creating a Feeling secondary character! Yay!