I always held Bill in the highest regard of SEO experts. He truly seemed to posses a data science-level expertise of search patents and I always looked forward to his takes on these concepts (even if some were above my head!). From interviews and webinars I watched over the years, he always seemed like a gentle, down-to-earth man. Heck, he even liked and re-tweeted me once, and for me that was a big deal.

R.I.P. Bill. Thank you for all you did.