I like the concept a lot - 4.3 billion presets in an uber-minimal package - never run out of sounds! But the sounds themselves get pretty stale after flipping through about 100 of them.
Most of them are very treble-y, metallic, noisy, with lots of reverb. Lots of tinkly bells, gongs, and variations thereof. So the pallete is a bit limited. I don't tend to find a lot of use for these types of sounds in my music, at least thus far. They also dominate the frequency spectrum a fair bit, so some zealous EQ'ing might be in order to fit them into a mix.
That said, if you like those sounds, you now have 4.3 billion of them!
The randomly generated descriptions are pretty funny.
The thing is free, of course, so I feel a bit silly being critical of it. It's something of a promo / sound engine demo for Image-Line's Ogun, which I haven't used beyond flipping through some presets in the demo.