Sounds like he wants to just make the filesystem less transparent and handled solely by the application that uses it.<p>It's nice, and user friendly, until you want to switch. One of the reasons the Mac vs. PC debate is almost moot is because of how easy it is to move from one to another. A JPEG is a JPEG, no matter where it is. A folder of JPEG files can move back and forth no problem. But moving from iPhoto to Picasa on a PC? Not so easy, esp since you may need to write a specific routine to handle each programs individual "filesystem".