This tumblr blog has analysed all the q&as of the test: pottermoreanalysis.tumblr.com
I've done the test several times - consistently getting Slytherin. Recently however, I wanted to re-take it but I can't re-join anymore (I think they've gotten onto me...) So I used the above blog and turns out....
Originally I was VERY STRONGLY Slytherin (for reasons I am surprised to find out how), Ravenclaw secondary, Gryffindor tertiary and Hufflepuff the least.
NOW.... I'm Gryffindor primarily, Slytherin and Ravenclaw equally secondary and Hufflepuff STILL last. I'm like a real-lofe Severus Snape, minus the bad hair and the unrequited love.
Funny though... that psycho-analysis test online (that 100 question one) ALWAYS puts me in Hufflepuff.
.... I'd definitely be one of those students who sits on the stool for ages before McGonagall takes off the sorting hat and ushers me away stating that I clearly don't fit in at Hogwarts...