2. The method of claim 1 , further comprising: monitoring a portion of the particular search result document to detect one or more changes in the portion of the particular search result document; and determining that content of the particular search result document changed, upon detecting the one or more changes in the portion of the particular search result document.
2. The method of claim 1 , further comprising: monitoring a portion of the particular search result document to detect one or more changes in the portion of the particular search result document; and determining that content of the particular search result document changed, upon detecting the one or more changes in the portion of the particular search result document. 3. The method of claim 2 , where the portion of the particular search result document corresponds to a set of terms that appear most frequently in the particular search result document, relative to other terms in the particular search result document.