Kudos on your success and a well written article, but to be very frank, this is incredibly hard to emulate. An analogy would be the Envato network discussing the success of a new sister site and attributing the initial traction to their already well established network. Not that there's anything wrong with that - just that there's not too much for me to learn.
If there's one takeaway, it's that leverage can be a wonderful thing and can make a tremendous difference to the outcome of a startup. There's a superb post on Quora that articulates this really well: http://www.quora.com/Xianhang-Zhang/Disregard-ideas-acquire-...
That said, (and please correct me if I'm wrong) I think this represents minimal value in terms of actionable insight for the reader, so I'm intrigued as to how this hit the top of HN. My theory is a lot of users chose to upvote this post without actually bothering to click through and read the article.