Too little effort.
I once reviewed a gadget on this site that simulated an etch-a-sketch. I gave it a 5/10. Why? Because, sure, if I want to draw pictures I can do that with MS Paint. But with that etch-a-sketch thing, I could do with the Arrow Keys! Something different! Something at least slightly interesting! Also, the graphics looked nice.
But here, there isn't anything different or interesting at all. Ok, fine, there are some pretty color effects. But I can get those by drawing in Photoshop. This isn't exactly making me giggle with delight over here. Basically what I'm saying is there's not enough new. Not enough stuff that's actually interesting.
Also, the graphics do not look nice. You put zero effort into the presentation. Unless your flash gadget does something AMAZING, like making the icons on my desktop dance, or converting sentences into music (I'm just making this shit up as I go along btw), then the presentation is 90% of what makes or breaks the submission. There's not much substance in these little things, so they have to look pretty, or at least neat.