The Temp folder can be a lifesaver when your system freezes and you haven't saved a document, but more often than not, it just hogs drive space. CleanIt is a freeware program that automatically executes when you start your computer and deletes files and folders from your Temp directory. Of course, you can always delete these files manually, but it's convenient to have it done automatically.
It's an unsafe world out there for Windows-based computers. Microsoft wants to address the problem with its new megapatch, Service Pack 2 for Windows XP.