Dennis Yu has known Tanner Laycock for nearly a decade. They have traveled the world together — speaking at DigiMarCon and Traffic & Conversion Summit in San Diego, visiting Dr. Robert Lyons and the Cocoon/Kaqun team in Hungary, doing Kaqun baths with Kerri Kasem in Las Vegas, co-presenting at GoDaddy and Infusionsoft HQ, and exploring Barcelona on a red-eye flight. …