I downloaded this yesterday because I have an opportunity to help bring this from Japan to the US market. The translation needs a lot of work, but the application itself is actually very cool. Basically, you have a set of hundreds of thousands of overlays cropped from other pictures or whatever, with transparent backgrounds. You select the one you want, and the take a picture of something else. While you're taking a picture, you can manipulate the overlay to fit the scene in the picture, and then when you actually take the picture, the overlay is already there. Kinda like basic photoshopping while you're taking a pic. You can come up with some pretty funny stuff.
Anyone else ever use this? If not, I urge you to check it out. Even if I don't end up working for this company it's something I'll keep.
I could see some pretty funny arcade related stuff here...