WordPress has become a leading CMS due to its clear focus on bloggers and e-commerce, ease of use for non-techies, and its strong blogging community. It is noted for being user-friendly, allowing operation without prior manual reading, and has a significant presence online, being the 18th most visited website worldwide. With over 355,000 bloggers and a notable percentage of its blogs ranking in the top million websites, WordPress's strengths are pivotal in its success.