1. An authoring assistant comprising: a parser which identifies opinion expressions in an input text; an opinion review component which generates an analysis of the text based on the identified opinion expressions, the opinion review component computing an effective opinion of the text as a function of a measure of polarity associated with the identified opinion expressions; a representation generator which generates a representation of the analysis for display on an associated user interface, the representation of the analysis including a representation of the effective opinion; and a processor which implements the opinion review component and representation generator.