SearchWiki was a Google Search feature which allowed logged-in users to annotate and re-order search results.
The annotations and modified order only applied to the user's searches, but it was possible to view other users' annotations for a given search query.
[1] SearchWiki was released on November 20, 2008 and discontinued on March 3, 2010.
Users no longer have the option to annotate or re-order search results.
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