“It just works” means it does what you would expect the behavior to do, and dragging something to a place and having it end up there is exactly what you would expect to happen.
Don’t know about that. It’s called ‘drag and drop’ and to be honest, you just drag it and drop it. It’s pretty much the easiest way to do drag and drop.
I put all kinds of images in there. photos from the camera, screen shots, images I download. Photos is where they end up. then I can filter them down to what I want. Seem like where they belong.