another advantage of this index is the third party,independent ranking for all of the standard&poor 's 500 .one limitation of this index is the lack of a weighting scheme for the different dimensions of corporate social performance in that all dimensions are treated as equally important. a second limitation of the kld is the potential for a company 's product ,for example,to be rated as both a major strength and a major weakness .this dual rating effectively nullifies any adverse effects or potential benefits of a company 's product line,so long as the company is diversified enough to have a broad product line. further,collapsing the kld 's multiple dimensions into a unidimensional index may mask the individual dimensions that are especially important and relevant for a specific company or industry.