15. A system, comprising: a main memory; one or more processors; and one or more programs, stored in the main memory and executed by the one or more processors, the one or more programs including instructions for: providing a rating icon for a first document in a group of documents; receiving from a user, through a selection of the rating icon, a user rating of the first document in the group of documents; generating a first user-specific rating for the first document based on the user rating, wherein the first user-specific rating corresponds to the user and is distinct from respective user-specific ratings of other users for the group of documents; receiving a search request sent by the user; identifying a plurality of documents that satisfy the search request, wherein the plurality of documents includes a second document that has not previously been rated by the user and is in the group of documents; and sending a response to the search request, the response including instructions to display a ranked set of links to at least some of the plurality of documents that satisfy the search request, wherein the ranked set of the links includes a link to the second document, wherein the link to the second document is displayed with the first user-specific rating.
28. The system of claim 15 , further comprising instructions for: storing the first user-specific rating for the document in a user information database.