I never put in the effort to learn how to actually deal with game code (though I have messed around with it now and then when forced to)... so corruption's still been a bit useful. But it is the brute-force method to editing. It can also be very misleading. The best way to use corruption for finding data (not seeing how it works, though), is to corrupt the data in half-increments. If the game breaks in one of the halves when you're trying see if your corruption messed up what you wanted, your further divide up your corruption, bringing you to smaller and smaller containment areas, until hopefully, you've corrupted just the area relative to your data. I say this is misleading, because it's not like one part out of the entire game will always mess up in that one spot--several different bits of code can be ruined and make your game crash where you're looking for your data. It's not really misleading--it's just extremely brute force.