WhatIsNew just wrote up a good discussion of using Windows Journal as an index card. The article mostly talks about using Journal on a UMPC, where the reduced screen size gives a good effect of having index cards. However, I think people tend to dismiss the capabilities of Windows Journal too quickly. It's a simple application, but it can be really powerful in its simplicity. Often I don't want the overhead and breadth of capability of OneNote, and Journal steps right up to many of these lighter tasks.

via WhatIsNew