To their credit, Twitter’s executives are self-aware enough to know the company has been living sort of like a trust-fund child well past its metaphorical college days. Every startup needs some time in the cradle, of course, but when you’re hosting 50 million messages per day and you still don’t have a revenue plan, questions start getting kind of pointed. Any business in the world has long been able to take a free ride on Twitter — just make an official profile for your company, and suddenly you can communicate directly with customers.