There seems to be this idea going around that usability testing is bad, or that the cool kids don’t do it. That it’s old skool. That designers don’t need to do it. What if I told you that usability testing is the hottest thing in experience design research? Every time a person has a great experience with a website, a web app, a gadget, or a service, it’s because a design team made excellent decisions about both design and implementation—decisions based on data about how people use designs. And how can you get that data? Usability testing.
A nice overview/introduction to usability testing