SearchWiki was a Google search

Google search

Google or Google Web Search is a web search engine owned by Google Inc. Google Search is the most-used search engine on the World Wide Web, receiving several hundred million queries each day through its various services....

 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. SearchWiki was released on November 20, 2008 and discontinued on March 3, 2010. All previously created SearchWiki edits are preserved on the logged in users SearchWiki notes page.

Google Stars replaces SearchWiki. Users no longer have the option to annotate or re-order search results. Instead a user clicks on a "star marker" which makes the entry appear in a starred results list at the top of a new search. The starred results list can be clicked to bring up Google Bookmarks

Google Bookmarks

Google Bookmarks is a free online bookmark storage service, available to Google Account holders. It was launched on October 10, 2005. Google Bookmarks allows users to bookmark favorite websites and add labels or tags, and also notes....

where the list entries can be annotated.