It’s not productive to ask questions like “Do most people like pulldown menus?” The right kind of question to ask is “Does this pulldown, with these items and this wording in this context on this page create a good experience for most people who are likely to use this site?” One way to answer the question: testing.
Don’t make me think
Being an expert in online usability Krug gathered his experience in a wonderful book. This summary of key thoughts will help you to remember most important principles and laws.