You don’t need professional designers to develop good products
: Test your design out with people. Go through your mock-ups with people. Jason Putorti : I come from an advertising agency background. To me, user comprehension is very important. What is the most important thing in the page for the user? Garry Tan : People do not get copy correctly. As a result, users get lost. This is a big problem. Designers should think about how they are communicating to one single person, what is in their mind, and what needs to be done to make the person do what they intend. Luke Wroblewski : This is a big question. To me, the number one principle is “Do no harm.” Do not communicate the wrong thing and waste the users’ time. Today, time is the most precious thing. Wasted times means doing harm. Kevin Fox : Design should make something very easy to understand yet seemingly invisible. Design is creating things to make things more productive.