Proven SEO Techniques 6

51. The method of claim 1, further comprising: obtaining a search query, where the identified document is identified as relevant to the search query; and generating a relevancy score for the document based on how relevant the document is to the search query; and wherein the generating a score for the document is based, at least in part, on the one or more types of history data and the relevancy score.

52. A system for scoring a document, comprising: means for identifying a document; means for obtaining a plurality of types of history data associated with the document; and means for generating a score for the document based, at least in part, on the plurality of types of history data.

53. A system for scoring a document, comprising: a history component configured to obtain one or more types of history data associated with a document; and a ranking component configured to: generate a score for the document based, at least in part, on the one or more types of history data.

54. A method for ranking a linked document, comprising: determining an age of linkage data associated with the linked document; and ranking the linked document based on a decaying function of the age of the linkage data.

55. The method of claim 54, wherein the linkage data includes at least one link.

56. The method of claim 54, wherein the linkage data includes anchor text.

57. The method of claim 54, wherein the linkage data includes a rank based, at least in part, on links and anchor text provided by one or more linking documents and related to the linked document.

58. The method of claim 57, further comprising: determining longevity of the linkage data; deriving an indication of content update for a linking document providing the linkage data; and adjusting the ranking of the linked document based on the longevity of the linkage data and the indication of content update for the linking document.

59. The method of claim 58, wherein the adjusting the ranking includes penalizing the ranking if the longevity indicates a short life for the linkage data and boosting the ranking if the longevity indicates a long life for the linkage data.

60. The method of claim 59, wherein the adjusting the ranking further includes penalizing the ranking if at least a portion of content from the linking document is considered stale over a period of time and boosting the ranking if the portion of content from the linking document is considered updated over the period of time.

61. The method of claim 54, further comprising: determining an indication of link churn for a linking document providing the linkage data; and based on the link churn, adjusting the ranking of the linked document.

62. The method of claim 61, wherein the indication of link churn is computed as a function of an extent to which one or more links provided by the linking document change over time.

63. The method of claim 62, wherein adjusting the ranking includes penalizing the ranking if the link churn is above a threshold.