Currently, screenshots are named VRAM0.PPM which is not very easy to recognize. They are also placed on the root of the SD card, which can get cluttered.
We should name it Screenshot-20160708-21:33:04.ppm or something like that. And it should go in /Screenshots for clarity. And so everything is neatly organized in folders.
This is just a preference, and that is why I set it to trivial.