Pure curiosity motivates this question. Up until today, when I needed to get into the i386 folder I'd do a search for the folder name and double-click on the result in order to be taken to an Explorer window of the folder's contents. Today I FINALLY noticed that the folder I'm taken to is named "Application Data" and is therefore much easier to find/get to.
Why did MS do this, and how did they do it? The first question is still just curiosity, but I can see possible uses for the answer to the second.