If you are logged in to a Google account and you promote a search result using the SearchWiki icons, the web page is automatically saved to Google Bookmarks. For some reason, Google labels the web page using your query, so you'll end up with a long list of labels.
The list of SearchWiki annotations is already available at http://www.google.com/reviews/w, but it's not searchable. Now the list of annotations is more discoverable, but it makes it more difficult to find your bookmarks.
Some users customize Google's results using SearchWiki to associate searches with their favorite web pages. Marissa Mayer said that, on average, "40% of searches on any given day are repeat searches for that user".