Directory listings are a fundamental part of SEO as they offer the opportunity to create high-quality backlinks which, in turn, boosts visibility on search engine result pages. Listings in web directories also make it easier for web crawlers to index and categorize websites, helping to generate organic search engine traffic. Additionally, directory listings can improve brand recognition by making your business visible on multiple platforms. Overall, directory listings play an important role in increasing website visibility and boosting organic search engine traffic.