Having a blog is important for rankings because it provides a constant stream of fresh content for search engines to index, allowing you to target specific keywords, build backlinks, and establish your website as a relevant authority on a topic, which ultimately helps your site rank higher in search engine results pages (SERPs). 

Key reasons why a blog improves rankings:

• Fresh content: Regularly publishing new blog posts signals to search engines that your site is actively updated, which is a positive factor for ranking. 
• Keyword optimization: By targeting relevant keywords throughout your blog posts, you can improve your chances of appearing in search results for those specific queries. 
• Backlink generation: When other websites link to your blog posts, it increases your website’s authority and can significantly boost your rankings. 
• User engagement: High-quality blog content that is informative and engaging can encourage users to stay on your site longer, which is a positive signal to search engines. 
• Thought leadership: Regularly publishing insightful blog posts can establish you as an expert in your field, building trust with potential customers and improving your brand image. 
• Long-tail keyword targeting: Blogs allow you to focus on niche topics and long-tail keywords that can attract more qualified traffic to your site.