30. A computer-program product, tangibly stored on one or more memory devices, the product comprising instructions executable to cause a processor to perform a method, the method comprising: receiving a search query; identifying a plurality of links to documents, each link having a relevance score in relation to the received search query; ranking the links based on the relevance scores and based, at least in part, on parameters other than the relevance scores; comparing, to a threshold value, differences in values among the relevance scores associated with the links; selecting one of the links for which a graphic indication is to be provided, the selecting being based on a click through rate of the selected link being higher, by at least a threshold amount, than click through rates of all other links in the plurality of links, the selecting being further based on at least one of the following parameters: the selected link's rank as specified by the ranking; the relevance score associated with the selected link being higher, by at least a threshold amount, than the relevance scores associated with all the other links in the plurality of links; or a classification that the selected link is associated with a pornographic document; and outputting the links, the ranking, and an indication that the selected link is to be displayed with the graphic indication.
30. A computer-program product, tangibly stored on one or more memory devices, the product comprising instructions executable to cause a processor to perform a method, the method comprising: receiving a search query; identifying a plurality of links to documents, each link having a relevance score in relation to the received search query; ranking the links based on the relevance scores and based, at least in part, on parameters other than the relevance scores; comparing, to a threshold value, differences in values among the relevance scores associated with the links; selecting one of the links for which a graphic indication is to be provided, the selecting being based on a click through rate of the selected link being higher, by at least a threshold amount, than click through rates of all other links in the plurality of links, the selecting being further based on at least one of the following parameters: the selected link's rank as specified by the ranking; the relevance score associated with the selected link being higher, by at least a threshold amount, than the relevance scores associated with all the other links in the plurality of links; or a classification that the selected link is associated with a pornographic document; and outputting the links, the ranking, and an indication that the selected link is to be displayed with the graphic indication. 31. The computer-program product of claim 30 , where at least some of the outputted links are not provided with an associated graphic indication.