Google is experimenting with a search feature that allows users to tailor their searches by creating a list of sites they would like to appear most in search results.You have to be signed in to your Google Account to use preferred sites. Once you are, you can edit your preferred sites at the bottom of the Google Preferences page, which you can access by clicking the Preferences link next to the search box on Google.com.Preferred Sites will suggest frequently visited sites based on search history when it's relevant, but users can also add and delete sites, according to the new feature's help page at; http://www.google.com/support/websearch/bin/answer.py?answer=118281