Well I know why..
I know why your previous attempts got blammed, if they're anything like this submission I'm not surprised-no offense.
To make a good....anything...game, or flash, needs to have time spent on it, and that means more than six days.
Your game play was ok, though the sounds were very annoying. It would have been better to have sounds only when you jumped, not everytime you moved. There's somthing funky about the hit detect on your platforms-even when Bobby IS going slow.
If this is somthing you really wanna do, then put time and effort into it. That means into the art, and instruction page as well.
If not then don't bother submitting. And I'm not trying to sound like a bitch- I'm very interested in seeing you improve, and in case this one gets blammed, don't give up on it.