I helped save this the day you submitted it, but took awhile to get around to reviewing it, as is my wont.... so anyway, I enjoy the basic premise of the gameplay... slinging golfballs, tennisballs, baseballs, frisbees... just about anything.... at targets in a sort of driving range/shooting range/batting practice type environment is always fun, provided the engine doesn't completely blow.
I think the control aspect of flinging the frisbee with the mouse cursor works well enough, though it's way too easy to flub a throw and massively underthrow it on your 5th throw, even when throws 1 through 4 were FREAKIN' PERFECT, which is kinda irritating. I also kinda wish there were more target areas, including maybe in the far left and right corners. That'd be nifty.
I think there's only one change I'd really make for sure, though: Make it where you can click ANYwhere on the screen to go to the next throw. Having to click right on the frisbee's kinda... eh. Non-intuitive, I guess. Also, if I were you I'd clear your scoreboards. Either people figured out how to hack the boards or they were exploiting the bugs earlier on in your game's life (i.e. that 5 million point bug someone mentioned about 5 reviews ago). Those issues aside... great stuff!