I don't know anybody inside DH personally, but I initially liked about them having atmosphere of a company run by a bunch of geeks. It's been inspiring to watch how they handle various issues as they grow, and yet try to keep the atmosphere. Sure they've made some basic mistakes which can be criticized as "unprofessional", but any company can do so. As the number of customers grow, you need to hire more staff and I think it gets difficult to keep the high standard.

When you start up a company, probably it consists of only smart people. As you grow and you have to hire more staff, some junior, and it'd be getting difficult to for you to track what everyone is doing... how will you handle the situation?