17. A computer method, comprising: storing a plurality of answers in memory of the computer; extracting, for each respective single answer, a plurality of related queries corresponding to the respective single answer, at least two of the related queries corresponding to the respective single answer being different from one another; assigning a category to each of the related queries such that there are a plurality of categories assigned to the related queries corresponding to the respective single answer, wherein one of the plurality of categories is a spam category and answers in the spam category are not downloaded; and determining the relevance of the plurality of categories relative to one another and, assigning at least one of the categories assigned to the related queries, corresponding to the respective single answer, to the respective single answer.
17. A computer method, comprising: storing a plurality of answers in memory of the computer; extracting, for each respective single answer, a plurality of related queries corresponding to the respective single answer, at least two of the related queries corresponding to the respective single answer being different from one another; assigning a category to each of the related queries such that there are a plurality of categories assigned to the related queries corresponding to the respective single answer, wherein one of the plurality of categories is a spam category and answers in the spam category are not downloaded; and determining the relevance of the plurality of categories relative to one another and, assigning at least one of the categories assigned to the related queries, corresponding to the respective single answer, to the respective single answer. 18. The method of claim 17 , further comprising: extracting at least one data query corresponding to each of the answers; and matching the data query with the related queries.