I think that you have to be able to promote the site, too. Along with that is the realization that you might have to keep it up for one to three years before you see the traffic that you are looking for. I have yet to see anything develop into a huge success overnight on the internet (please correct me if I am wrong). Take a look at eBay, for instance. Before it was eBay, it was AuctionWeb. That was back in the early 1990's before anybody had anything other than dial-up. It worked, but there were only a handful of users on it. One thing led to another, and look at it today.