The viewfinder which doesn't
If you have already shot a roll or two, you may realise that the Holga's viewfinder ranges from fairly to completely useless. This, my friend, is due to something called parallax. Unlike fancy SLR cameras, what you see is not necessarily what you get. This is because the viewfinder is offset from the cameras lens. The effect this has on your pictures is relative to how close you are to your subject - the close you are the more offset it becomes. Not only is your image offset, the viewfinder can only display 60% of what the Holga lens captures.
So what's the point?
Sometimes it is useful - mainly if your subject is quite some distance away. When it gets to about 9ft or less, just aim the camera roughly at the subject. After all this isn't a lesson in perfect composition, this is Holgagraphy! Just point and click and you may be pleasantly surprised.
