1) What kinds of information and insights did it give you about the usability of the prototype?
First, as an observer, I find that I can analyze the situation more objectively, and I can observe the emotions that users experience when they use the site. On the other hand, by thinking aloud, I think I can share empathy with others and see things differently.
2) What aspects of the technique worked well or were frustrating?
I noticed something missing and made me aware of my behavior, which I wouldn’t normally notice when speaking out loud when using a website. Observing the user’s response will assess the performance of the product in a comprehensive manner.