1. A method for facilitating skimming by a user of a document presented on a presentation device using at least one variable emphasis attribute having at least three values, the document having a plurality of terms, the method comprising: determining a term-score for each of the plurality of terms; mapping the term-score for each of the plurality of terms onto one of the at least three values of the at least one variable emphasis attribute; and presenting to the user each of the plurality of terms of the document using the mapped values of the at least one variable emphasis attribute.