3. The host computer system of claim 2 , the quality control system further comprising: a weight dictionary stored in a data store; a weight lookup module looking up a weight for each term in the weight dictionary; and a weight association module attaching the weight of each term in the reference vector.
2. The host computer system of claim 1 , wherein in the remote search engine computer system returns a reference results page and the calculation of the reference score includes calculating a reference vector that includes at least a frequency of terms in the reference results page.