High PR Online business listing sites have always been an integral part of Search Engine Optimization link building strategy. Business directories don’t directly affect keyword rankings directly because a directory rarely offers a do-follow link with keyword rich anchor text link. But submitting your website to a reputed online business directory always helps to increase its trust rank and domain authority. As a result, they does make a positive impact on your website’s search engine rankings. Therefore, you should never underestimate the effectiveness of free online business listing sites.