7 Types Of Feedback That Helped Make Gov.uk Awesome | Quick People Blog http://quickpeople.wordpress.com/2013/06/06/7-types-of-feedback-that-helped-make-gov-uk-awesome/#user-research
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Notice how in the final version, the search bar is de-emphasised. This change was made as a result of user testing that showed that users who preferred search would come in through Google anyway