I think that Quora's advertising model could be similar to Google in that there is potentially a high degree of purchase intent associated with asking or even b

I think that Quora's advertising model could be similar to Google in that there is potentially a high degree of purchase intent associated with asking or even browsing certain questions. It will probably never achieve the same scale, but I can see their CPMs being comparably high. One of the big reasons I think investors are excited about Q&A is that the model can be seen as a better replacement for search engines for long-tail, high-expertise questions. This is probably the reason Quora is trying to keep question and answer quality as high as possible. So far I think they have succeeded, although this will always be a tough thing to balance with growth.