The site is now practically unusable or explorable in a non logged in state. Not sure when this change took place, but almost every page will prevent the user from exploring the site, whether it's performing a search, clicking a photo or a member's name. The only one that doesn't restrict further actions is giant banner that takes up a quarter of the screen [1]. Nothing turns me off faster.
It's mind boggling to me that another company is employing the quora style growth tactics like this despite all the backlash quora has gotten over their practices. :(
[1] http://i.imgur.com/ApC3Zgs.png