Just begin with some of the many good and bad examples of usability cases. In google search, when you click the "search" button after typing in the keywords, at the top of the search result a tip will appear saying...
The new beta site http://www.askx.com/ is pretty impressive overall. Fast results, AJAX'y UI, thumbnail preview, facade search, vertical search, etc. Just the "Save to MyStuff" is a bit confusing at the beginning. After adding a few items to mystuff, I'm...
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