Using a website is like in-store shopping:
- Users look for something specific.
- They browse, or ask for help (i.e. ‘search’ for a keyword).
- If browsing, users look at signage for clues.
- They leave if frustrated.
But websites are also unlike real-world stores:
- Hard to tell how big a website is, and thus when to stop looking for something.
- Must memorize important locations conceptually (or via bookmarks). Cannot retrace physical steps, like in the real-world.
Hence intuitive page navigation is a must-have, for it not only helps users find stuff, but also reveals site content and leaves a good impression.