Quora has been successful at obtaining authoritative opinions - something that Google Knol failed to do because it grants an online reputation, instant readersh

Quora has been successful at obtaining authoritative opinions - something that Google Knol failed to do because it grants an online reputation, instant readership and following to those that express their opinion, which seems to be important to such people. Furthermore, to me, it's like Ask HN and Hackerfollow on steroids. I still won't participate in it, but will read it like I read Wikipedia.