The bottom line, it just isn't good.
The whole "avoider" genre isn't one of my favorites, but I've seen them done right in the past, and I assure you that the low score you're getting isn't due to genre bias.
The graphics are... well, okay, I guess... and the music I suppose could have been worse...
And unfortunately, that's the closest thing I can come to in regards to this game's good points- the gameplay and the mechanics behind them are both complete disasters.
First and foremost, in an 'avoider' game, I'd like to be able to avoid things. It doesn't matter if you're falling at light speed or might-as-well-be-levitation (and I'll be saying something about that later), you either have no time to react to anything and thus smack into anything that pops below you with no warning, or you simply plow through an insanely thick cloud of birds, hanggliders, and balloon kids that you cannot possibly avoid on a consistent basis due to the fact that most of them charge straight into you.
Now, moving on to the speed. The moment you open up that parachute, which is a requirement to win, you move at an AGONIZINGLY slow pace, which you can't back out of at all. From there, all you can do is wait, and wait, and get plowed into by a good 80% of everything onscreen, and wait, and wait, until you FINALLY make it to the target. At which point you suddenly and instantly shoot into the ground as if you were fired from a gun, throwing off anyone who's trying to land on the bullseye.
The scoring system needs a serious overhaul. It is completely useless to do tricks because on the offchance that you don't slam face-first into at least five birds in the process, you, on the best of trick runs, MIGHT score 11 points. While your score is counting down at the rate of about 40 points per second or more. What is my incentive to do tricks or score pickups (or even worry about slamming into things I'm not supposed to) when the rewards and penalties are such pittances? The only thing that's worth trying to do is landing on the center of the bullseye- landing on one of the outer rings scored me a completely staggering (by comparison, of course) 2,500 points!
And finally, you did not think mouse control through at all. Doing tricks with a button that will not do tricks and will instead bring up a menu on my browser? I'm sorry for the rude tone, but seriously, what in the hell were you thinking when you came to that decision?
This game needs a SERIOUS overhaul before I would ever consider playing it again. May your next game be thought out better than this one; you've really got nowhere to go but up from this.