The finance niche has high CPC and CPM rates. Topics like insurance, loans, and investments perform well. The technology niche also pays well for ads. Blogging about software or gadgets attracts high-paying advertisers. The health niche offers good CPM, especially for fitness and supplements. Education content earns high CPC for online courses. The legal niche focuses on law services and pays high. Real estate topics attract premium advertisers. Travel blogs also generate high CPM for tours and hotels. Business and marketing niches work well for earning. Writing targeted content can boost your ad earnings. Focus on valuable topics for better rates.