14. A method as claimed in claim 1 wherein the annotations referencing the group of documents are external textual annotations.
14. A method as claimed in claim 1 wherein the annotations referencing the group of documents are external textual annotations. 15. A method as claimed in claim 14 wherein the external textual annotations comprise one or more of anchortext, click-implied descriptions, popularly assigned tags, document titles, metadata tags, or URL words.