I submitted that post, so I have some vested interest in this. I came across this bug because I was converting one of my web apps to use the new iOS 6 feature of being able to upload photos from your Camera Roll to a web site.

However, when you upload a picture, apparently, they are all called image.jpg. Since the image name never changed, every time I uploaded a new pic, the first pic was being returned. I couldn't understand why, and as usual, stackoverflow had a good answer for me. I needed to add a timestamp option to my URL in order to work around this behavior.

Ouch. That could cause some real damage!