We wanted to know what searching would be like on Longhorn. Sam gives us a preview. He mentions "intermediate searches." That's worth going into further here.
Imagine typing in your explorer Window (it'll be something different in Longhorn, but play along here). You type "B" and all your pictures, documents, contacts, and other things that start with "B" instantly show up.
You continue and type "U." Now you see all those files that start with "BU." Continue on "D;" "G;" "E..."
Now in front of you are only documents that start with the name BUDGE. Hey, all your budget documents are there. Your Excel spreadsheets. The Word documents. Anything with the word "budge" in them. Continue typing and your available choices continue to be whittled down.
How do you see WinFS changing how you'll search for things on your hard drive?