3. A computer-implemented method for comparing content overlap between a target electronic document and at least one additional electronic document, comprising: receiving, at a computer, a search request from a user for documents containing one or more keywords; using the computer to access an electronic database and present to the user a first list of one or more documents in the electronic database based on the one or more keywords, the first list of one or more documents including a first hyperlink for the first electronic document; receiving at the computer a request for the first electronic document via the first hyperlink; determining, in response to the request for the first electronic document, a second list of documents in the electronic database that are similar to the first electronic document, the second list of documents including the second electronic document, and the determining comprising: using the computer to parse a text of each of the target and at least one additional document into constituent units; using the computer to identify named entities within each of the constituent units; using the computer to pair identified named entities which appear together within the same constituent units; and using the computer to assess a similarity between the target document and the at least one additional document based on a result of the paired entities; and using the computer to display to the user the contents of the first electronic document and a hyperlink to the second electronic document and a graphic indicating the similarity between the target document and the at least one additional document with an indication of similarity, wherein the graphic comprises: a measure of relationship overlap between the target document and the at least one additional document; a measure of relationship overlap between the target document and a selected portion of the at least one additional document; a measure of a size of the target document; a measure of a size of the at least one additional document; and a measure of a size of the textual overlap between the target document and the at least one additional document, wherein at least two of the measure of textual overlap between the target document and the at least one additional document; the measure of relationship overlap between the target document and the at least one additional document; and the measure of relationship overlap between the target document and a selected portion of the at least one additional document are displayed as bars having a length corresponding to a magnitude of the respective measure.
3. A computer-implemented method for comparing content overlap between a target electronic document and at least one additional electronic document, comprising: receiving, at a computer, a search request from a user for documents containing one or more keywords; using the computer to access an electronic database and present to the user a first list of one or more documents in the electronic database based on the one or more keywords, the first list of one or more documents including a first hyperlink for the first electronic document; receiving at the computer a request for the first electronic document via the first hyperlink; determining, in response to the request for the first electronic document, a second list of documents in the electronic database that are similar to the first electronic document, the second list of documents including the second electronic document, and the determining comprising: using the computer to parse a text of each of the target and at least one additional document into constituent units; using the computer to identify named entities within each of the constituent units; using the computer to pair identified named entities which appear together within the same constituent units; and using the computer to assess a similarity between the target document and the at least one additional document based on a result of the paired entities; and using the computer to display to the user the contents of the first electronic document and a hyperlink to the second electronic document and a graphic indicating the similarity between the target document and the at least one additional document with an indication of similarity, wherein the graphic comprises: a measure of relationship overlap between the target document and the at least one additional document; a measure of relationship overlap between the target document and a selected portion of the at least one additional document; a measure of a size of the target document; a measure of a size of the at least one additional document; and a measure of a size of the textual overlap between the target document and the at least one additional document, wherein at least two of the measure of textual overlap between the target document and the at least one additional document; the measure of relationship overlap between the target document and the at least one additional document; and the measure of relationship overlap between the target document and a selected portion of the at least one additional document are displayed as bars having a length corresponding to a magnitude of the respective measure. 26. The method of claim 3 , wherein the indication of similarity comprises one or more indicators, the indicators comprising: an indication of like semantic pairs between the target document and the at least one additional document and an indication of the presence of original material in the target document, relative to the at least one additional document, for one or more of the identified named entities and/or the pair of named entities that appear together within the same constituent unit.