User interviews have become a popular technique for getting user feedback, mainly because they are fast and easy. Use them to learn about users’ perceptions of your design, not about its usability.
Interviews
User Interviews: How, When, and Why to Conduct Them — NN/g
As a free and powerful web analytics tool, Google Analytics is more popular than ever. In fact, W3Techs estimates that about 53% of all websites today uses it — and so should you.