9. The computer-readable memory device of claim 8 , where the anchor text is one of a plurality of anchor text associated with a plurality of links pointing to the document; where the one or more instructions to determine the measure of how the anchor text changes over time include: one or more instructions to analyze, over time, a respective appearance of the plurality of anchor text, and one or more instructions to identify a rate of increase in the respective appearance of the analyzed plurality of anchor text.
9. The computer-readable memory device of claim 8 , where the anchor text is one of a plurality of anchor text associated with a plurality of links pointing to the document; where the one or more instructions to determine the measure of how the anchor text changes over time include: one or more instructions to analyze, over time, a respective appearance of the plurality of anchor text, and one or more instructions to identify a rate of increase in the respective appearance of the analyzed plurality of anchor text. 10. The computer-readable memory device of claim 9 , where the one or more instructions to generate the score for the document include: one or more instructions to score the document based on the identified rate of increase in the respective appearance of the plurality of anchor text.