1. An automated process which computationally analyzes dozens of product reviews to create a multiphrase composite product review containing selected extracts without requiring any selection of review extracts by human reader(s), thereby making possible a uniformity of extract selection, a breadth and promptness of composite review distribution, and a rapidity and reliability of composite review creation which are not feasible by mental steps alone, the process comprising the steps of: electronically accessing a source collection of product reviews, each product review containing at least a digital text; automatically selecting representative phrases from the digital texts of at least some of the product reviews, each representative phrase being an extract of (that is, coming from) at least one of the product reviews' digital text, wherein a phrase is by definition deemed to be a representative phrase when the phrase comes from a product review which has a star rating within thirty percent of an overall star rating of the source collection, and wherein a phrase is also by definition deemed to be a representative phrase when a star rating of the phrase derived from a balance between positive and negative sentiments in the phrase is within thirty percent of a star rating of the product review the phrase comes from, and wherein all representative phrases in the composite product review are by definition deemed to be representative phrases when a balance between positive and negative sentiments in the composite product review is within thirty percent of a balance between positive and negative sentiments in the source collection, the foregoing definitions being nonexclusive and any one of the definitions being sufficient for a phrase to be deemed representative; and automatically aggregating at least some of the selected representative phrases into one or more coherent sentences, thereby creating the multiphrase composite product review, wherein the multiphrase composite product review is brief in that the length in words of the multiphrase composite product review is no more than one half of the combined lengths of the digital texts of the product reviews from which the representative phrases were extracted.