"1: Compiz
"No matter how clean Aero gets, I am not a fan of the flat, single-workspace desktop of Windows 7. Yes, it has come a long way, but it’s not nearly the modern desktop that Compiz offers. Of course, many would argue that Compiz is nothing more than eye candy. I, on the other hand, would argue that many of the features Compiz offers are just as much about usability as they are eye candy. Having a 3D desktop that offers you quick access (via key combinations) to multiple workspaces is handy. Window switchers can’t be beaten for ease of use. And the eye candy is just a bonus. Having Compiz on top of Windows would certainly take the experience to a level few Windows users have experienced.
"2: Multi-user
"Yes I know you can have multiple accounts on a Windows 7 box, but that doesn’t make it truly multi-user. Can you log on more than one user at a time in Windows 7? Not by default. To have concurrent user sessions for Windows 7, you have to download a third-party tool. In Linux, you can do this by default. This is a feature that should be enabled by default in Windows 7, too.
"3: Log files
"Windows operating systems have plenty of tools that enable the administrator to read log files. But for system, administration, and security issues, the administrator must fire up the tools to see those log files. But Linux places all system log files in /var/log and allows the user (with the right permissions) to read these log files from a simple text editor."
