11. A method of ranking entities using reputation or influence scores, comprising: using a processor to determine reputation scores for one or more subjects based on connections, the reputation scores indicating reputations of the subjects; providing a plurality of citations, each citation representing an online posting of an expression of opinion by a subject on an object, wherein the subject is representative of a user; using a processor to select a subset of citations for each object from the citations citing each object, the content of the citations in the selected subset matching one or more of search terms for a search query; assigning citation scores to a subset of a plurality of objects, the citation scores indicating relevance of the objects cited by citations and are determined based at least in part on matching one or more search terms with the content of the citations of the objects by the one or more subjects, the selection scores for an object being determined for each search query based on a subset of subjects citing the object; combining the citation scores for the objects and the reputation scores for the subjects citing the objects to calculate selection scores for the objects determined based on matching of the one or more search terms with the content of the citations, the selection scores for an object determined for each search query based on a subset of subjects citing the object, with the subjects in the subset being the subjects of previously selected subsets of citations to each object, a different selection score computed for the same object when a different search query is provided; and selecting and ranking the objects based on the selection scores of the objects, a different ranking computed for a same set or overlapping sets of objects when the search query is different.
13. The method of claim 11 , wherein the subjects in the subset of subjects are the subjects of previously selected subsets of citations to each object.