Facebook does have a very clear, distinct hierarchy. It's user centric, and oriented around relationships. -Homepage: Big wall of stuff --User page, another w

Facebook does have a very clear, distinct hierarchy. It's user centric, and oriented around relationships. -Homepage: Big wall of stuff --User page, another wall ---Info ---Pictures --Your profile ---Pictures etc At no point do ever look around in Facebook and think "where am I? How do I go somewhere else?" Other users exist on Facebook. Discovering them is straightforward. If I want more friends, I know how to get them. Tailoring the experience to your personal profile is the correct choice. Quora just isn't doing it correctly. What you're saying makes a lot of sense, though, in that Quora is treating questions and topics like people. It seems like using a screwdriver to make an omelet.