Bill is 100% amongst my favourite people in SEO and beyond. Thoughtful and respectful, yet prepared to provide a solid argument to support a case and debate an issue with unwavering integrity. Whenever I'm unsure about a concept or theory, Bill is undoubtedly my first port of call since his knowledge of our industry through the years has such depth of detail and genuine credibility. He is normally able to find a paper or patent which serves as a valuable resource for sense checking on most SEO topics. But more than that, and reaching far beyond the realms of SEO, Bill is just a lovely, warm and caring person, loved by many, and I'm extremely grateful for him.