During a recent visit to HubSpot's headquarters, members of the Build team got to see the remnants of one of the inbound marketing firm's capture sessions, a strategy we wrote about earlier this year. Scribbled in blue ink on a whiteboard wall near the desk of user-experience director Joshua Porter was a list of "Good UX Questions."

Those six essential queries, listed above, stress functionality over bells and whistles and shouldn't go unanswered during the web design process. But why stop there? We asked a few UX professionals--(Cliff Sexton, user experience director at CareerBuilder.com, Perry Hewitt, chief digital officer at Harvard University, and Catalina Naranjo-Bock, user experience design researcher at Yahoo) what questions they'd add to the list. Their responses are also listed above.