Whenever you are viewing a listing of folders and documents you can easily sort the list by date by clicking the "by date" check box (located in the Show bar).

The current set of folders and documents is instantly redisplayed with the most recent documents at the top of the list. This is a great way to find your most recent work - that last document you were editing yesterday, or the one you were working on last Friday but can't remember which folder you located it in.

Since folders work identically across all of KeepandShare, you can also use this view by date feature identically for your addresses, discussions, favorites and photo blogs.