When did Google start displaying "Did you mean" results?

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Опубликовано 7 марта 2009, 0:16
On February 26, 2009, Google software engineer Matt Cutts collected questions on Google Moderator and answered many of them on video.

BlindFiveYearOld from SF, CA asked:

When did "Did you mean" search results begin to be displayed? And what is the criteria for presenting "Did you mean" search results above the normal search results?
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