Pink and gray brain hats at the March for Science in Washington become one of the symbols of the march’s message, representing the idea of critical thinking.

Gray hats try to play in the zone between white and black. They do not disclose security discoveries to criminal gangs, but they don’t reveal them to the vendors, either.

However, the concept of black, gray, and white hat SEO revolves around Google’s rules, not your business’ bottom line. Too often, SEO pros make strategy decisions to adhere to the rulebook ...