Yup, I was thinking that was the case, and that you didn't "act in bad faith", so to speak :) In other words, copying SO's content would actually be a good way to "preseed" the site with interesting q&a - if the attribution requirements are followed (some people get really angry when they see their own content misattributed).

Anyway, I was a bit confused about the +1/+share buttons; you might want to differentiate them a bit further. Apart from that, I like the site's extreme simplicity, both in look and operation.