amazon mechanical turk

Anyone else exploring this, done these? My sister and I both signed up and under both our sign ups they make you take a qualification test for certain work, well all it is is one website with an ok box to check so I did mine looking for more before submit (dont want to get a 0% on the test) the extra 10 seconds gave me a score of 80 . . . or so I thought, my sis does hers lightning fast (we're on to them now) and in .00001 seconds (guessing here) her score is an 80??????? but u need a 95 for half the jobs there? what in the good lord is this a test on how fast you can click a box we have high speed internet so thats not the issue, why even test people if the test is one that a retarded chimp can get an 80 on sitting there for an hour before he clicks the box or my sis can get an 80 on in .00001 seconds? and how on earth do you get a 95 you click the box three pages before it comes up? What is this crap.