“The proliferation of usability labs is a sign of success for the field of user-centered design. Whether it’s a low-rent lab comprised of a couple adjacent conference rooms, a video camera, and a television, or a fully decked-out space with remote-control cameras, two-way mirrors, an observation room, and bowls of M&Ms — more and more companies are investing in such set-ups. Conducting user tests in labs is probably the most common means of getting user input on projects.” (Peter Merholz – Adaptive Path)