Why don't you outsource it to some smart people who know how to manage a community for couple of months and after a month or two, you can have him as a partner. With this you will have to choose a right guy who is interested in improving the site. Don't care about competition, techcrunch would not cover them and they might not be able to get the traction you have now. So just hold on to it, its not everyday you get a chance to be the centre of attention ( for good or bad). Utilize it in your favor.
