15. A system comprising: one or more devices to: determine a measure of how anchor text, that is associated with a link pointing to a document and that includes character text referring to a content of the document, changes over time; generate a score for the document based on the measure of how the anchor text, associated with the link pointing to the document, changes over time; and rank the document with regard to at least one other document based on the score.
15. A system comprising: one or more devices to: determine a measure of how anchor text, that is associated with a link pointing to a document and that includes character text referring to a content of the document, changes over time; generate a score for the document based on the measure of how the anchor text, associated with the link pointing to the document, changes over time; and rank the document with regard to at least one other document based on the score. 20. The system of claim 15 , where the one or more devices are further to: determine a measure of freshness of the anchor text, where the generated score is further based on the determined measure of freshness of the anchor text.