In my opinion, I find these introductory threads to be quite a waste of time, but I, regardless, proceed to do so.
Not too long ago I signed up on INTPCentral and through it I discovered this website. Currently I am having somewhat of a trouble deciding whether I am an INTJ or an INTP. On some tests I come out as INTP. On an equal amount of tests I come out as INTJ. But, on most recent tests, I am frequently getting RIGHT in the middle. Exactly 50/50.
As a result, I have been meticulously examining EVERY single description of both INTPs and INTJs that I can find. As it turns out, certain aspects of the INTJ description fit me better than the INTP, and vice-versa. Well, I'll just have to research more.
P.S. Due to my difficulty in typing myself, I have chosen under the type category of my profile to alternate between days. On Mondays, Wednesdays, and Fridays, my type will be listed as INTJ. On Tuesdays, Thursdays, and Saturdays, my type will be listed as INTP. On Sundays, I'll either write INTX, or something strange and irrelevant.