Marketing online content requires writing skills and optimizing pages for search engines. Keywords are essential to drive traffic, and keyword density matters. Press releases should use simple language to engage readers, with eye-catching headlines and short paragraphs providing information. Search engine optimization improves traffic by preparing sites to rank for keywords. Search engines charge advertisers on a pay-per-click basis. AdSense allows websites to earn money through ads. Google Optimizer can test page variations to determine the most effective design. Important website elements include common pages and a sign up form to engage users.