I'm also a long-term Quora skeptic -- and have been documenting the reasons why in the comments at http://bit.ly/imitates#comments http://bit.ly/imitates#commen

I'm also a long-term Quora skeptic -- and have been documenting the reasons why in the comments at http://bit.ly/imitates#comments http://bit.ly/imitates#comments for the last six months. Agreed about the likely outcome; hard to know about the valuation. And agreed with the other commenters that StackExchange/StackOverflow is in a very different situation. It's hard to know whether or not they'll get to "mainstream"; but they don't necessarily have to in order to be a very successful company. And they've got a huge advantage of several topics where they are one of the best resources on the web -- and an much larger active community than Quora.