The present disclosure provides example methods and apparatuses for implementing comment ranking by a search engine. One or more terms describing a target object are extracted from a comment in connection with the target object. One or more useful attributes included in the comment are obtained according to the terms describing the target object. An scoring index the comment is determined according to a number of the useful attributes. The comment is scored according to the index. The comment is ranked according to the score. The present techniques enable a user to quickly and efficiently view helpful comments and help the user make an informed decision.