Possible Duplicate:
How are “Hot” Questions Selected?
What is the list of interesting questions on stack overflow?
Please do not shoot and kill me if this is answered already at some obvious place (I looked around, believe me) but really the different queries available in Stack Exchange (I am mostly in Stack Overflow) are a bit a mystery to me. I searched around and could not find a guide that tells me how questions are selected. Of course it is obvious what comes on "unanswered" and "newest" but I am most puzzled what makes a question being listed under "Top Questions" and "Interesting". Does someone know?
Edit: I am talking about this